Totally lied about coming back. Well, I've actually been kinda busy. But I took a video of the Sun, for anyone left following, enjoy it!
Saturday, October 8, 2011
Posted in 
Tuesday, September 13, 2011
Returning
7:37 AM
Astronomy Pirate
I am back, but I am considering how to get back into blogging. Please, accept this as my return. I got a job working overnight flow at Target. Not glorious, but it will do temporarily. Future plans include pursuing my Master of Arts in Teacher (MAT) with a science education focus and moving in with my GF. But for the next few months, I feel I will be stable enough to blog fairly regularly.
There have been a fairly large amount of new astronomy stories my last update. There is no possible way to cover them all. I only hope you have been following the news for the past month and a half or so since I have been away. But I hope to be getting back into providing quality astronomy news and educational articles soon. Plus, hopefully, some more of my own images and videos of the night sky.
I enjoy being able to put my thoughts down and I am grateful to the readers of this blog for being patient in my return. In fact, I do not think I even lost any followers while I was gone. I see this as a real plus in the shifting world of blogging, a supportive motion of my readers to not lose faith. And I haven't lost it in them.
If you haven't been able to tell yet, I am real passionate about science education, with a focus on space science. These topics spur the imagination and fuel the future. The future of mankind is amongst the stars. Sharing and encouraging the pursuit of such knowledge then drives an economic engine towards accomplishing those goals. It creates jobs, it improves education, it solves problems, it is the future.
Right now we are lucky enough to live in what has often been called the golden age astronomy. The first time we are able to study our Universe in such stark detail, by putting telescopes in orbit above the Earth's atmosphere, reducing distortion to see so much more clearly. But even beyond that, we have the Voyager probes pushing through the edge of the solar system, our first true interstellar craft. Happening only about 110 years after the first successful airplane on Earth.
Again, so much more can be said. We are living in a truly revolutionary age in the modern world. At the same time it saddens me to know there are those who don't even know a man landed on the Moon. I don't want this turn to much into a wandering lecture. So I think I'll wrap it up. But know that we have a very bright future, and I intend to keep tabs on it and voice my opinion on it when necessary.
There have been a fairly large amount of new astronomy stories my last update. There is no possible way to cover them all. I only hope you have been following the news for the past month and a half or so since I have been away. But I hope to be getting back into providing quality astronomy news and educational articles soon. Plus, hopefully, some more of my own images and videos of the night sky.
I enjoy being able to put my thoughts down and I am grateful to the readers of this blog for being patient in my return. In fact, I do not think I even lost any followers while I was gone. I see this as a real plus in the shifting world of blogging, a supportive motion of my readers to not lose faith. And I haven't lost it in them.
If you haven't been able to tell yet, I am real passionate about science education, with a focus on space science. These topics spur the imagination and fuel the future. The future of mankind is amongst the stars. Sharing and encouraging the pursuit of such knowledge then drives an economic engine towards accomplishing those goals. It creates jobs, it improves education, it solves problems, it is the future.
Right now we are lucky enough to live in what has often been called the golden age astronomy. The first time we are able to study our Universe in such stark detail, by putting telescopes in orbit above the Earth's atmosphere, reducing distortion to see so much more clearly. But even beyond that, we have the Voyager probes pushing through the edge of the solar system, our first true interstellar craft. Happening only about 110 years after the first successful airplane on Earth.
Again, so much more can be said. We are living in a truly revolutionary age in the modern world. At the same time it saddens me to know there are those who don't even know a man landed on the Moon. I don't want this turn to much into a wandering lecture. So I think I'll wrap it up. But know that we have a very bright future, and I intend to keep tabs on it and voice my opinion on it when necessary.
Wednesday, August 3, 2011
On Hold
9:01 PM
Astronomy Pirate
I'm putting this blog on the back burner as I need to focus on getting my life organized. I'll hopefully be back whenever I find a stable form of income. It may not be daily when I get back, but I would like to try to update every other day, there's still so much to write about, literally a whole Universe.
I do enjoy it though, sharing a bit of the Universe with readers. I already do astronomy outreach in my community, and I always felt this was a nice way to reach a larger audience. But, there's only so much someone can do without gainful compensation. I would hope that even if I don't come back, I would hope that my readers continue following our expanding understanding of the cosmos. A good list of informative sites are in the sidebar to the right, under 'Useful Astronomy Links'.
I do plan to come back to this though, maybe in a month or so. Maybe I will be refreshed and holding a legitimate job and ready to blog again. Until then, there's still lots out there to be amazed at. Today I was blown away by the rather legitimate idea that the Earth might have had two moons at one point. Then there have been other stories: LEGO figurines on the NASA spacecraft Juno, which is launching for Jupiter on Friday; Oxygen particles detected in deep space; The ESO has discovered 96 new open star clusters in the Milky Way that were hidden by dust; and my favorite asteroid, Vesta, is being revealed in amazing detail, and a short video of its rotation.
I suggest spending this weekend looking to see if you have a local Vesta Fiesta (my astronomy club is hosting one during our normal open house.) And if not, you should definitely go out and look for shooting stars, the Delta Aquariids and Perseids meteor showers are overlapping this weekend. Since the height of the Perseids will have a full moon, this weekend might be a great chance to go out and take a look.
I'll see you all when I get back.
I do enjoy it though, sharing a bit of the Universe with readers. I already do astronomy outreach in my community, and I always felt this was a nice way to reach a larger audience. But, there's only so much someone can do without gainful compensation. I would hope that even if I don't come back, I would hope that my readers continue following our expanding understanding of the cosmos. A good list of informative sites are in the sidebar to the right, under 'Useful Astronomy Links'.
I do plan to come back to this though, maybe in a month or so. Maybe I will be refreshed and holding a legitimate job and ready to blog again. Until then, there's still lots out there to be amazed at. Today I was blown away by the rather legitimate idea that the Earth might have had two moons at one point. Then there have been other stories: LEGO figurines on the NASA spacecraft Juno, which is launching for Jupiter on Friday; Oxygen particles detected in deep space; The ESO has discovered 96 new open star clusters in the Milky Way that were hidden by dust; and my favorite asteroid, Vesta, is being revealed in amazing detail, and a short video of its rotation.
I suggest spending this weekend looking to see if you have a local Vesta Fiesta (my astronomy club is hosting one during our normal open house.) And if not, you should definitely go out and look for shooting stars, the Delta Aquariids and Perseids meteor showers are overlapping this weekend. Since the height of the Perseids will have a full moon, this weekend might be a great chance to go out and take a look.
I'll see you all when I get back.
Monday, August 1, 2011
August 2011 Highlights
6:30 AM
Astronomy Pirate
August is here and we are moving into late summer in the northern hemisphere. July wasn't a very ambitious month for me because I spent so much time enjoying my summer, we'll see about a new month. The dominant astronomical event for August is the Perseids meteor shower. Although a Full Moon at it's peak will dampen the experience, the rest of the month should still be full of a few bright traces through the night sky. The weather is still warm, and many great constellations are high in the sky. So if you get the chance, go out and look up:
August 5: Juno Launch: Juno is an ambitious mission to understand the origin and evolution of planet Jupiter. You can read more about it on NASA Juno mission page.
August 8: First Quarter Moon: The Moon is halfway through the waxing phase, a great time for observing as the shadows provide wonderful contrast.
August 12-13: Perseids Meteor Shower: (active July 22-August 22) Usually one of the best meteors shower of the year, but this year it will be marred by a Full Moon during its peak. However, up to 60 meteors per hour may be possible in dark locations. The meteors appear to radiate from the constellation Perseus.
August 13: Full Moon: The Moon will be directly opposite the Earth from the Sun and will be fully illuminated as seen from Earth. This moon, in the Native American tradition of naming the full moons throughout the year, is known as the Full Sturgeon Moon. It gets its name from the large sturgeon fish of the Great Lakes and other major lakes were more easily caught at this time of year.
August 16: Venus at Superior Conjunction: Venus swings around the opposite side of the Sun and passes into the evening sky. (It will briefly be directly opposite of the Sun from us, therefore not visible.)
August 21: Last Quarter Moon: Halfway through the Moon's waning phase.
August 22: Neptune at Opposition: The planet will be on its closest approach to Earth and fully illuminated by the Sun. This is the best time to observe Neptune, but even the most powerful telescopes reveal little more than a tiny pale blue dot.
August 29: New Moon: The Moon will be directly between the Earth and the Sun and will not be visible from Earth.
August 5: Juno Launch: Juno is an ambitious mission to understand the origin and evolution of planet Jupiter. You can read more about it on NASA Juno mission page.
August 8: First Quarter Moon: The Moon is halfway through the waxing phase, a great time for observing as the shadows provide wonderful contrast.
August 12-13: Perseids Meteor Shower: (active July 22-August 22) Usually one of the best meteors shower of the year, but this year it will be marred by a Full Moon during its peak. However, up to 60 meteors per hour may be possible in dark locations. The meteors appear to radiate from the constellation Perseus.
August 13: Full Moon: The Moon will be directly opposite the Earth from the Sun and will be fully illuminated as seen from Earth. This moon, in the Native American tradition of naming the full moons throughout the year, is known as the Full Sturgeon Moon. It gets its name from the large sturgeon fish of the Great Lakes and other major lakes were more easily caught at this time of year.
August 16: Venus at Superior Conjunction: Venus swings around the opposite side of the Sun and passes into the evening sky. (It will briefly be directly opposite of the Sun from us, therefore not visible.)
August 21: Last Quarter Moon: Halfway through the Moon's waning phase.
August 22: Neptune at Opposition: The planet will be on its closest approach to Earth and fully illuminated by the Sun. This is the best time to observe Neptune, but even the most powerful telescopes reveal little more than a tiny pale blue dot.
August 29: New Moon: The Moon will be directly between the Earth and the Sun and will not be visible from Earth.
Wednesday, July 27, 2011
Earth's First Asteroid Companion Discovered
9:56 PM
Astronomy Pirate
This is an amazing discovery. Up until now, companion asteroids that more or less share an orbit with Earth have been theoretical. This class of asteroids is known as Trojans; Jupiter has them, and so do Mars and Neptune. Now Earth joins the club with 2010 TK7, an asteroid approximately 300 meters (1000 feet) across and 80 million km (50 million miles) from Earth.
NASA’s Wide-field Infrared Survey Explorer (WISE) managed to notice the small asteroid. WISE sees in the infrared, where warmer objects are easier to spot. 2010 TK7 is probably about the freezing point of water, which is pretty warm to astronomers. It also orbits such that it is mostly in the sky during daylight hours from Earth, so your typical amateur astronomer isn't going to be able to go out and spot this.
WISE was an asteroid hunting satellite that stopped operating back in February. Astronomers discovered 2010 TK7 by looking through the vast amount of data collected by WISE and confirmed it with Earth-based telescopes. This gives hope that other Earth Trojans might be buried in the data waiting to be found. Where there is one, there may be many.
What makes a Trojan, a companion asteroid, special, is that they orbit what is called a Lagrangian point. Five special spots between two astronomical bodies where gravity is essentially neutral. The points remain stable relative to where the one body is along its orbit around the other. The graph above maps out the locations of where these points would be.
2010 TK7 orbits Earth's L4 point, rather than remaining stable at the point or orbiting the Earth itself. It also has a kind of funky orbit that takes it closer and further away from the Earth, but it is still roughly 60 degrees in front of us and of no danger to the Earth. It just won't ever get close enough.
It is a tantalizing discovery because it opens the door to several new questions. We know little about this asteroid. It may be a candidate for future exploration, but because of it's odd orbit (it goes well above and below the orbital plane), it would be difficult to reach. But you can bet astronomers are going race to find more Earth Trojans. They have been looking for them for some time already, so it was only a matter of time.
And being an object of some importance, it will also need to be named. Coeus or Crius, the Titan sons of Gaia have been mentioned, but there are other sons of hers. Personally I wouldn't my the cyclopes sons of Gaia; Brontes ("thunderer"), Steropes ("lightning") and the "bright" Arges. But I guess we'll have to see.
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| Asteroid 2010 TK7 is circled in green, in this single frame taken by NASA's Wide-field Infrared Survey Explorer, or WISE. Image credit: NASA/JPL-Caltech/UCLA |
NASA’s Wide-field Infrared Survey Explorer (WISE) managed to notice the small asteroid. WISE sees in the infrared, where warmer objects are easier to spot. 2010 TK7 is probably about the freezing point of water, which is pretty warm to astronomers. It also orbits such that it is mostly in the sky during daylight hours from Earth, so your typical amateur astronomer isn't going to be able to go out and spot this.
WISE was an asteroid hunting satellite that stopped operating back in February. Astronomers discovered 2010 TK7 by looking through the vast amount of data collected by WISE and confirmed it with Earth-based telescopes. This gives hope that other Earth Trojans might be buried in the data waiting to be found. Where there is one, there may be many.
What makes a Trojan, a companion asteroid, special, is that they orbit what is called a Lagrangian point. Five special spots between two astronomical bodies where gravity is essentially neutral. The points remain stable relative to where the one body is along its orbit around the other. The graph above maps out the locations of where these points would be.
2010 TK7 orbits Earth's L4 point, rather than remaining stable at the point or orbiting the Earth itself. It also has a kind of funky orbit that takes it closer and further away from the Earth, but it is still roughly 60 degrees in front of us and of no danger to the Earth. It just won't ever get close enough.
 |
| This artist's concept (not to scale) illustrates the first known Earth Trojan asteroid, discovered by WISE. The asteroid is gray and its extreme orbit is shown in green. Image credit: Paul Wiegert, University of Western Ontario, Canada |
It is a tantalizing discovery because it opens the door to several new questions. We know little about this asteroid. It may be a candidate for future exploration, but because of it's odd orbit (it goes well above and below the orbital plane), it would be difficult to reach. But you can bet astronomers are going race to find more Earth Trojans. They have been looking for them for some time already, so it was only a matter of time.
And being an object of some importance, it will also need to be named. Coeus or Crius, the Titan sons of Gaia have been mentioned, but there are other sons of hers. Personally I wouldn't my the cyclopes sons of Gaia; Brontes ("thunderer"), Steropes ("lightning") and the "bright" Arges. But I guess we'll have to see.
Monday, July 25, 2011
The Largest, Most Distant Water Reservoir Found
8:47 PM
Astronomy Pirate
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| This artist's concept illustrates a quasar, or feeding black hole, similar to APM 08279+5255, where astronomers discovered huge amounts of water vapor. Image credit: NASA/ESA |
Black holes that are active like this one are known as quasars. Known as APM 08279+5255, the black hole at the center is some 20 billion times more massive than our Sun. It also produces the energy of a thousand trillion suns, and early powerhouse in the Universe.
The water exists in the form of water vapor, a gas, around the black hole and its distribution can reveal details about the nature of the quasar. They can determine how the radiation from the quasar is heating the surrounding gas, which, by astronomical standards, is unusually warm and dense. At several hundred light years across, it is one order of magnitude or two denser and about 5 times hotter than water vapor found in a typical galaxy. It is still far from the comfort of Earth's atmosphere though, at a freezing -63 degrees Fahrenheit (-53 Celsius) and 300 trillion times less dense than the Earth's atmosphere.
[How can water that cold be a gas? That is entirely because of the density, since the particles of water are so far spread apart, they do not condense as the would into a solid under higher pressures (like the Earth's atmosphere).]
There is enough gas in this cloud for the black hole to grow about six times its current size. However, it is unclear if it would reach that far, some gas may be ejected from the quasar or form into stars.
The research is partially funded by NASA and the astronomer teams will be having their paper published in the Astrophysical Journal Letters later this year. You can read a little bit more about it in the NASA release.
Friday, July 22, 2011
I Guess I Should Stop Being Lazy
2:00 PM
Astronomy Pirate
I have been back home from my vacation since Monday, but haven't felt much like writing a post. First it was because I was a bit sad leaving the beach and my girlfriend. And then when trying to come up with something in the past few days, there has just been an overwhelming amount of astronomy news that it was hard to pick where to dig into.
Anyways, I am back. You can expect normal posting to resume Monday. I'll probably be checking out the blogs that I follow this weekend. I dunno how much I will get back into it though, I am still working on that job hunt.
But for some weekend reading, here are some of the big astronomy stories that I haven't taken the time to tackle:
The next Mars Rover, Curiosity, had its landing site chosen, Gale crater.
The Dawn probe entered orbit around asteroid Vesta on the 15th, our first close glimpse is amazing.
A fourth moon has been discovered around Pluto. Right now it seems like they are leaning towards naming it Cerberus, the 3-headed dog that guards the gates of The Underworld.
The House has proposed cancelling the James Webb Telescope, described as the Hubble successor (it doesn't really do the same thing, but it's still amazing). The telescope is over 50% done, probably closer to 75-80% and would be in orbit by 2015. Along with a 9% total cut to NASA's budget, with the shuttles winding down, this is like a sucker punch to NASA, an insult. Hopefully the Senate and President alter this course.
Yes, we are officially living in a post-space shuttle world right now. Atlantis landed safely at 5:56 AM EST on the morning of the 21st. Hopefully the post-space shuttle world is temporary and a replacement unveiled soon.
With the space shuttles grounded, the private space race has been heating up. This provides some optimism for the future. NASA can focus on pushing the boundaries that they have done so well while leaving the trucking to someone else.
Also, July 18th was former astronaut John Glenn's 90th birthday. The 20th was the 42nd anniversary of the Moon landing.
There might have been a few other interesting things I missed over, but the major focus has been on the winding down of the shuttle mission. I hope you all have a good weekend!
Anyways, I am back. You can expect normal posting to resume Monday. I'll probably be checking out the blogs that I follow this weekend. I dunno how much I will get back into it though, I am still working on that job hunt.
But for some weekend reading, here are some of the big astronomy stories that I haven't taken the time to tackle:
The next Mars Rover, Curiosity, had its landing site chosen, Gale crater.
The Dawn probe entered orbit around asteroid Vesta on the 15th, our first close glimpse is amazing.
A fourth moon has been discovered around Pluto. Right now it seems like they are leaning towards naming it Cerberus, the 3-headed dog that guards the gates of The Underworld.
The House has proposed cancelling the James Webb Telescope, described as the Hubble successor (it doesn't really do the same thing, but it's still amazing). The telescope is over 50% done, probably closer to 75-80% and would be in orbit by 2015. Along with a 9% total cut to NASA's budget, with the shuttles winding down, this is like a sucker punch to NASA, an insult. Hopefully the Senate and President alter this course.
Yes, we are officially living in a post-space shuttle world right now. Atlantis landed safely at 5:56 AM EST on the morning of the 21st. Hopefully the post-space shuttle world is temporary and a replacement unveiled soon.
With the space shuttles grounded, the private space race has been heating up. This provides some optimism for the future. NASA can focus on pushing the boundaries that they have done so well while leaving the trucking to someone else.
Also, July 18th was former astronaut John Glenn's 90th birthday. The 20th was the 42nd anniversary of the Moon landing.
There might have been a few other interesting things I missed over, but the major focus has been on the winding down of the shuttle mission. I hope you all have a good weekend!
Tuesday, July 12, 2011
Happy Birthday Neptune!
6:34 PM
Astronomy Pirate
Today marks the first orbit Neptune has made around the Sun since it was discovered September 23, 1846. In other words, one Neptunian year, that lasts approximately 165 Earth years. NASA has commemorated this anniversary by releasing new Hubble images of Neptune taken on June 25-26. You can read more about the picture (seen above) on NASA's Hubble Telescope page. Or you can just enjoy Neptune in its pale blue glory.
Friday, July 8, 2011
Final Space Shuttle Launch
9:44 AM
Astronomy Pirate
Atlantis is set to launch in roughly 2 hours from this posting, at 11:26 AM EST. I am going to the beach to hope to catch a glimpse of it as it soars on its final mission into space. If you want to watch it live online, I suggest going here: http://www.ustream.tv/nasahdtv
This is hoping that the weather clears up. It stands at a 30% chance of a 'go', 70% that it will get delayed. The good thing is that they have back up launch dates Saturday and Sunday, so it will go up this weekend. If anything, good luck to the brave astronauts on this momentous occasion.
I have been thoroughly enjoying my time in the Outer Banks, sorry for the lack of updates... OK, no I am not, it's my vacation. Anyways, I will be back home next Friday. There are plenty of updates to share, and lots of missed astronomy news. I can say that seeing the Milky Way in the middle of the night on Okracoke Island was one of the most awesome moments of my life. It was the most vivid I have ever seen it, and I shared that moment with someone I love. Good times.
This is hoping that the weather clears up. It stands at a 30% chance of a 'go', 70% that it will get delayed. The good thing is that they have back up launch dates Saturday and Sunday, so it will go up this weekend. If anything, good luck to the brave astronauts on this momentous occasion.
I have been thoroughly enjoying my time in the Outer Banks, sorry for the lack of updates... OK, no I am not, it's my vacation. Anyways, I will be back home next Friday. There are plenty of updates to share, and lots of missed astronomy news. I can say that seeing the Milky Way in the middle of the night on Okracoke Island was one of the most awesome moments of my life. It was the most vivid I have ever seen it, and I shared that moment with someone I love. Good times.
Friday, July 1, 2011
July 2011 Highlights
11:19 AM
Astronomy Pirate
Well, we are heading into another month. Prime time to be enjoying cookouts and beaches and all that great stuff. Or at least that's the case for the northern hemisphere. I am off on vacation, so this is a scheduled post this time around. But, at least with these it is pretty easy to schedule. There are plenty of sites to see this month, and it will be plenty warm, so no excuse to not go out and enjoy the night sky! You all know you like a cool summer's night, so let's see what we got:
July 1: New Moon: The Moon will be directly between the Earth and the Sun and will not be visible from Earth.
Partial Solar Eclipse: This one will only be visible off the coast of Antarctica. It you see it, I salute your bravery.
July 4: Earth at Aphelion: The furthest distance of the Earth from the Sun, occurs at 15h UT with the distance between the Earth and the Sun being about 152.1 million km, or 1.01674 astronomical units (AU).
July 8: Space Shuttle Atlantis: Scheduled as the final space shuttle launch, Atlantis STS-135 is targeted for 11:26 a.m. EDT. If you are on the east coast of the U.S., you should be able to get a decent glance as it climbs into space, Western Europe should also be able to get a glance too. Being the final launch, I encourage anyone that is able to to go out and watch. It really is something to see a shuttle streak across a stark blue sky.
First Quarter Moon: The Moon is halfway through the waxing phase, a great time for observing as the shadows provide wonderful contrast.
July 12: Neptune: Completes it's first orbit since discovery in 1846.
July 15: Full Moon: The Moon will be directly opposite the Earth from the Sun and will be fully illuminated as seen from Earth. This moon, in the Native American tradition of naming the full moons throughout the year, is known as the Full Thunder Moon. It gets its name from the prevalence of thunderstorms at this time of year.
July 21: Moon at apogee: The furthest distance of the Moon from the Earth occurs at 23h UT, at a distance of 404,355 km.
July 23: Last Quarter Moon: Halfway through the Moon's waning phase, The next New Moon will be July 1st.
July 28-29: Southern Delta Aquarids Meteor Shower: (active July 18-August 18) Usually an average meteor shower, expect around 20 meteors per hour during it's peak. The meteors appear to radiate from the constellation Aquarius. A thin crescent moon should make for excellent observing. Best observing is to the east after midnight in a dark location.
July 30: New Moon: The Moon will be directly between the Earth and the Sun and will not be visible from Earth. This is the second new moon of the month, an interesting occasion that occurs just as frequently as the full moon's blue moon. A supposed name for this event is the Black Moon, but there is nothing official.
July 1: New Moon: The Moon will be directly between the Earth and the Sun and will not be visible from Earth.
Partial Solar Eclipse: This one will only be visible off the coast of Antarctica. It you see it, I salute your bravery.
July 4: Earth at Aphelion: The furthest distance of the Earth from the Sun, occurs at 15h UT with the distance between the Earth and the Sun being about 152.1 million km, or 1.01674 astronomical units (AU).
July 8: Space Shuttle Atlantis: Scheduled as the final space shuttle launch, Atlantis STS-135 is targeted for 11:26 a.m. EDT. If you are on the east coast of the U.S., you should be able to get a decent glance as it climbs into space, Western Europe should also be able to get a glance too. Being the final launch, I encourage anyone that is able to to go out and watch. It really is something to see a shuttle streak across a stark blue sky.
First Quarter Moon: The Moon is halfway through the waxing phase, a great time for observing as the shadows provide wonderful contrast.
July 12: Neptune: Completes it's first orbit since discovery in 1846.
July 15: Full Moon: The Moon will be directly opposite the Earth from the Sun and will be fully illuminated as seen from Earth. This moon, in the Native American tradition of naming the full moons throughout the year, is known as the Full Thunder Moon. It gets its name from the prevalence of thunderstorms at this time of year.
July 21: Moon at apogee: The furthest distance of the Moon from the Earth occurs at 23h UT, at a distance of 404,355 km.
July 23: Last Quarter Moon: Halfway through the Moon's waning phase, The next New Moon will be July 1st.
July 28-29: Southern Delta Aquarids Meteor Shower: (active July 18-August 18) Usually an average meteor shower, expect around 20 meteors per hour during it's peak. The meteors appear to radiate from the constellation Aquarius. A thin crescent moon should make for excellent observing. Best observing is to the east after midnight in a dark location.
July 30: New Moon: The Moon will be directly between the Earth and the Sun and will not be visible from Earth. This is the second new moon of the month, an interesting occasion that occurs just as frequently as the full moon's blue moon. A supposed name for this event is the Black Moon, but there is nothing official.
Wednesday, June 29, 2011
'Gone' on Vacation.
5:00 PM
Astronomy Pirate
I am going to be spending a week or two down in North Carolina at the Outer Banks with my girlfriend. I will have my laptop and telescope and stuff with me, so I will make occasional updates on whatever catches my fancy. I will try to cover the final space shuttle launch, which is hopefully on the 8th, if it doesn't get delayed. I might even get to watch it travel up the eastern seaboard if we time it right.
Needless to say, I am excited to spend some time with my girlfriend, but the Outer Banks has another draw. See, it gets dark there, really really dark. To give you an idea of this, and maybe inspire some jealousy, I want you to watch the video below. It circulated on a couple astronomy blogs around June 15th. It is made by Daniel Lowe, and he wrote an article on how the video was made.
Beautiful and majestic, I cannot wait to get out under the stars and snuggle up with my girl.
Needless to say, I am excited to spend some time with my girlfriend, but the Outer Banks has another draw. See, it gets dark there, really really dark. To give you an idea of this, and maybe inspire some jealousy, I want you to watch the video below. It circulated on a couple astronomy blogs around June 15th. It is made by Daniel Lowe, and he wrote an article on how the video was made.
You are gonna want to set it to HD and turn full screen on.
Night Motion Timelapse: Outer Banks from Daniel Dragon Films on Vimeo.
(Yes that's a fire across the water in some of the footage. There has been a wildfire on the mainland that has been going on for some months now.)
(Yes that's a fire across the water in some of the footage. There has been a wildfire on the mainland that has been going on for some months now.)
Beautiful and majestic, I cannot wait to get out under the stars and snuggle up with my girl.
The video is on Vimeo, so I'm not sure how well that works internationally,
but maybe there is a Youtube version out there.
Tuesday, June 28, 2011
Preparing for Final Flight
5:00 PM
Astronomy Pirate
The last space shuttle mission is about a week and a half away. The Space Shuttle Atlantis is gearing up for launch on July 8th. The 'Final Four' astronauts are on site and conducting practice runs while Atlantis is being a thorough examination in preparation for launch.
But Atlantis sure does look amazing in the morning light. NASA recently released the above photo of the Sun rising behind Space Shuttle Atlantis, taken on June 23rd.
Meanwhile, the crew of STS-135 (the designation of this final mission) have been hard at work. The 'Grande Finale' of NASA's shuttle program is approaching fast. This is one time where we do not want 'bombs bursting in air.' The end of the Shuttle Era is less than a month away.
It is an uncertain time in human space exploration and no one is going to be expected to preform higher or undergo more scrutiny than these four brave people. The STS-135 team consists of Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Rex Walheim and Sandy Magnus.
But Atlantis sure does look amazing in the morning light. NASA recently released the above photo of the Sun rising behind Space Shuttle Atlantis, taken on June 23rd.
Meanwhile, the crew of STS-135 (the designation of this final mission) have been hard at work. The 'Grande Finale' of NASA's shuttle program is approaching fast. This is one time where we do not want 'bombs bursting in air.' The end of the Shuttle Era is less than a month away.
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| STS-135 crew at a Q&A session with journalists at base of Launch Pad 39A, Kennedy Space Center. From left; Mission Specialists Rex Walheim and Sandy Magnus; Pilot Doug Hurley and Commander Chris Ferguson. Credit: Ken Kremer |
It is an uncertain time in human space exploration and no one is going to be expected to preform higher or undergo more scrutiny than these four brave people. The STS-135 team consists of Commander Chris Ferguson, Pilot Doug Hurley, and Mission Specialists Rex Walheim and Sandy Magnus.
In a bittersweet moment, Commander Ferguson has this to say to journalists greeting the astronauts; "We are incredibly proud to represent this, the final flight. I speak on behalf of the crew, everyone in the astronaut office, and I’m sure everybody here at KSC in saying that we are just trying to savor the moment. As our children and our children’s children ask us, we want to be able to say, 'We remember when there was a space shuttle.'"
After three decades of missions, it will be sad to see the shuttles retired. But, we can hope it is not a permanent set back. We have barely tested the vast ocean of space, merely gotten our feet wet. Plans are being made for much needed replacements. The shuttles have provided a wonderful amount of workforce, but they are not without fault, as the multiple delays have shown. It is even likely that Atlantis will be delayed. Hopefully replacements come swiftly and effectively. The plans for new capsules right now seems to be working, they are expected to be 300% safer than the shuttles. It is hoped to be a safe and effective means of transporting man to the next frontier.
Monday, June 27, 2011
Close Call With an Asteroid
8:40 PM
Astronomy Pirate
Earlier today, (Monday, June 27 2011) at 17:01 UTC (1:01 PM Eastern US time) a small rock, roughly 10 meters in size, and named Asteroid 2011 MD, flew right past the Earth. In fact, if flew really really close to Earth, at about 12,400 km (7430 mi) from Earth’s surface. That distance is less than the diameter of the Earth itself! Or about 1/32 the distance to the Moon. But astronomers were dead on in determining that it would miss us.
It is actually fairly easy to determine where things are heading in space, or at least in the vicinity of our Solar System. The advent of Kepler's laws of planetary motion, along with Newtonian physics and some other neat tricks of the trade, and super computers for crunching the numbers, and really all that is needed is a velocity and a direction. So astronomers generally have a high degree of accuracy on object motion, there are perturbations every once in awhile, but this is usually because of some unseen gravitation interaction.
The biggest threat when it comes with asteroids of this size is the lack of warning. 2011 MD was discovered a mere 5 days before our encounter with it. Now, some people have been claiming that if an asteroid like this were to impact the Earth, it would send a tsunami across the planet twice. Which really just is not true. This was a loose, stony asteroid, like most asteroids, and would have broken up harmlessly in the atmosphere with no ground damage. If anything, it would be a hell of an early fireworks show. The worrisome ones are made up of iron, but aren't very common.
Of course, it was also a great chance for amateur and professional astronomers to study an asteroid up close. Lately, it's been up to us to send probes and robots to check out asteroids, so it's nice for them to stop by for a visit once in awhile. There have been some great photos posted in this Universe Today article, and Spaceweather.com has a couple of images and movies up. Researchers have also used radio telescopes to study this piece of Solar System history.
Over at Bad Astronomy, Phil Plait wrote an excellent article and suggested that this is the kind of object that future space missions will be looking to explore. It would be relatively easy, easier than getting to the Moon, to put a man on an asteroid like this. Again, the biggest short fall being the lack of warning. But now that we know about this object, and know it will be about another 13 years before it comes this close again, maybe we can have a mission put together by then. Here's hoping to that great future.
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| Trajectory of near-Earth asteroid 2011 MD passing Earth on June 27, 2011. Credit: NASA/JPL Near-Earth Object Program Office. |
It is actually fairly easy to determine where things are heading in space, or at least in the vicinity of our Solar System. The advent of Kepler's laws of planetary motion, along with Newtonian physics and some other neat tricks of the trade, and super computers for crunching the numbers, and really all that is needed is a velocity and a direction. So astronomers generally have a high degree of accuracy on object motion, there are perturbations every once in awhile, but this is usually because of some unseen gravitation interaction.
The biggest threat when it comes with asteroids of this size is the lack of warning. 2011 MD was discovered a mere 5 days before our encounter with it. Now, some people have been claiming that if an asteroid like this were to impact the Earth, it would send a tsunami across the planet twice. Which really just is not true. This was a loose, stony asteroid, like most asteroids, and would have broken up harmlessly in the atmosphere with no ground damage. If anything, it would be a hell of an early fireworks show. The worrisome ones are made up of iron, but aren't very common.
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| 2011 MD on Monday, June 27, 2011 at 09:30 UTC. Credit: Ernesto Guido, Nick Howes and Giovanni Sostero at the Faulkes Telescope South |
Of course, it was also a great chance for amateur and professional astronomers to study an asteroid up close. Lately, it's been up to us to send probes and robots to check out asteroids, so it's nice for them to stop by for a visit once in awhile. There have been some great photos posted in this Universe Today article, and Spaceweather.com has a couple of images and movies up. Researchers have also used radio telescopes to study this piece of Solar System history.
Over at Bad Astronomy, Phil Plait wrote an excellent article and suggested that this is the kind of object that future space missions will be looking to explore. It would be relatively easy, easier than getting to the Moon, to put a man on an asteroid like this. Again, the biggest short fall being the lack of warning. But now that we know about this object, and know it will be about another 13 years before it comes this close again, maybe we can have a mission put together by then. Here's hoping to that great future.
Saturday, June 25, 2011
'Magnetic Ropes' on the Sun Cause Solar Storms
2:22 AM
Astronomy Pirate
I always enjoy hearing about new discoveries in space science. I especially enjoy it when we learn more about our Sun. AND I really really enjoy it when it's a discovery made by researchers from my old University and have met in the past.
George Mason University professor Jie Zhang and his graduate student Xin Cheng proved the existence of 'magnetic ropes' that cause solar storms. They used images from NASA Solar Dynamic Observatory (SDO) to solve this blank in the understanding of heliophysics (the physics of the Sun). They presented their findings
Here are press articles from GMU and Space.com that describe a bit about the discovery. Essentially, there is now an understanding of what causes solar storms, a twisting tangle of magnetic fields that can create an immense eruption. Though it was already believed that these ropes could lead to eruptions, this research confirms it.
With this now known, astronomers are a step closer to understanding and predicting solar storms. This will be of a great benefit to just about anyone who relies on electricity. Solar storms have the potential to knock out power grids for extended periods (perhaps years) and cause catastrophic damage.
This sort of solar research is essential for protecting infrastructure and communication around the globe. So, I am thankful for the intelligent work of these researchers and hopefully much more will come. The results of the study were reported at the American Astronomical Society Solar Physics Division Meeting, which is being held from June 12 to 16 at New Mexico State University in Las Cruces.
[You may have noticed I haven't been as active lately. I've been a bit busy planning my 4th of July break, of which I'll likely be gone for a week. I'm looking at leaving for North Carolina's Outer Banks on the 30th. I'll probably make a couple scheduled posts. I have also been filling out job apps like it's my job. Seriously, there has to be a better way than filling in all the same info over and over again on every different website's application form. Oh well, it has gotta get done. Also, I am going to a friends wedding this weekend, so see you all on Monday. Hope you get to enjoy some sun and pleasant weather.]
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| On the left, NASA's Solar Dynamics Observatory shows the magnetic rope as the thick looped structure extending above the edge of the sun. On the right, SDO observes as the surrounding cool magnetic field lines are pushed away by the intruding magnetic rope seen on the left. Both images are taken almost simultaneously (within three seconds of each other). [Credit: NASA and GMU] |
George Mason University professor Jie Zhang and his graduate student Xin Cheng proved the existence of 'magnetic ropes' that cause solar storms. They used images from NASA Solar Dynamic Observatory (SDO) to solve this blank in the understanding of heliophysics (the physics of the Sun). They presented their findings
Here are press articles from GMU and Space.com that describe a bit about the discovery. Essentially, there is now an understanding of what causes solar storms, a twisting tangle of magnetic fields that can create an immense eruption. Though it was already believed that these ropes could lead to eruptions, this research confirms it.
With this now known, astronomers are a step closer to understanding and predicting solar storms. This will be of a great benefit to just about anyone who relies on electricity. Solar storms have the potential to knock out power grids for extended periods (perhaps years) and cause catastrophic damage.
This sort of solar research is essential for protecting infrastructure and communication around the globe. So, I am thankful for the intelligent work of these researchers and hopefully much more will come. The results of the study were reported at the American Astronomical Society Solar Physics Division Meeting, which is being held from June 12 to 16 at New Mexico State University in Las Cruces.
[You may have noticed I haven't been as active lately. I've been a bit busy planning my 4th of July break, of which I'll likely be gone for a week. I'm looking at leaving for North Carolina's Outer Banks on the 30th. I'll probably make a couple scheduled posts. I have also been filling out job apps like it's my job. Seriously, there has to be a better way than filling in all the same info over and over again on every different website's application form. Oh well, it has gotta get done. Also, I am going to a friends wedding this weekend, so see you all on Monday. Hope you get to enjoy some sun and pleasant weather.]
Wednesday, June 22, 2011
Becoming An Ice Hunter
5:35 PM
Astronomy Pirate
Just last week, I was praising and encouraging people to participate with the ambitious citizen scientist project, the Zooniverse. Now, if looking for exoplanets, identifying galaxies, examining the surface of the Moon, watching for solar storms, and studying the structure of our Milky Way Galaxy all sound boring to you (and really it shouldn't), then be prepared for their latest project: Ice Hunters.
Ice Hunters will have members of the public contribute in modern space exploration unlike any other way before. You can examine images from the giant Magellan and Subaru telescopes looking for Kuiper Belt Objects, or KBOs. These Pluto-like objects are lumps of ice, frozen chunks that exist on the fringes of our Solar System and may take millennia to circle the Sun once. Astronomers have already identified over a thousand KBOs, and there are likely tens of thousands left to be discovered.
Now, if discovering new objects in our own Solar System wasn't cool enough, you will help choose the next destination or two for a spacecraft to visit. The New Horizons probe is set to buzz past Pluto in July 2015, giving us an unprecedented view of the ice dwarf. Astronomers and researchers are on the edge of their seats for this encounter and are expecting to be amazed. But after New Horizons sails past Pluto, it is going to keep heading deeper into the outer solar system, deep into the Kuiper Belt, the territory of KBOs.
New Horizons has been given the capability to explore further objects than Pluto, and will be visiting one or two of them. With Ice Hunters, the KBOs found by the public will be considered as possible targets. KBOs have never been seen up close before, so your discovery may be one of the first of these objects ever studied up close and personal. Your discovery could lead to a bunch of new understanding about how our Solar System works, and maybe even an indication of how water was brought to the Earth.
It's an exciting prospect, especially for members of the general public. The site makes it just as easy as the other Zooniverse projects. Humans turn out to be really good at identifying these objects, were as computers tend to get confused by false positives in the data. You can read more about how it works here. That is why they need you. They need your eyes and your intelligence, there is far more data available than their are researchers.
Check out Ice Hunters and New Horizons maybe visiting your discovery soon!
Ice Hunters will have members of the public contribute in modern space exploration unlike any other way before. You can examine images from the giant Magellan and Subaru telescopes looking for Kuiper Belt Objects, or KBOs. These Pluto-like objects are lumps of ice, frozen chunks that exist on the fringes of our Solar System and may take millennia to circle the Sun once. Astronomers have already identified over a thousand KBOs, and there are likely tens of thousands left to be discovered.
Now, if discovering new objects in our own Solar System wasn't cool enough, you will help choose the next destination or two for a spacecraft to visit. The New Horizons probe is set to buzz past Pluto in July 2015, giving us an unprecedented view of the ice dwarf. Astronomers and researchers are on the edge of their seats for this encounter and are expecting to be amazed. But after New Horizons sails past Pluto, it is going to keep heading deeper into the outer solar system, deep into the Kuiper Belt, the territory of KBOs.
New Horizons has been given the capability to explore further objects than Pluto, and will be visiting one or two of them. With Ice Hunters, the KBOs found by the public will be considered as possible targets. KBOs have never been seen up close before, so your discovery may be one of the first of these objects ever studied up close and personal. Your discovery could lead to a bunch of new understanding about how our Solar System works, and maybe even an indication of how water was brought to the Earth.
It's an exciting prospect, especially for members of the general public. The site makes it just as easy as the other Zooniverse projects. Humans turn out to be really good at identifying these objects, were as computers tend to get confused by false positives in the data. You can read more about how it works here. That is why they need you. They need your eyes and your intelligence, there is far more data available than their are researchers.
Check out Ice Hunters and New Horizons maybe visiting your discovery soon!
Tuesday, June 21, 2011
Astro-Lesson: Summer Solstice
2:11 PM
Astronomy Pirate
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| The Sun as it appeared just a few minutes before today's solstice occurred. (Credit: NASA/SDO) |
As of 17:16 UTC (1:16 p.m. Eastern US time) today, June 21, 2001, the Sun will reach the furthest north of its travel across the sky. This event is known as the summer solstice in the north, and consequently has the most daylight of the year. In the southern hemisphere, it would be the winter solstice and the shortest day.
The summer solstice is generally used to either mark the beginning of summer or the midpoint, neither is really right or wrong. Seasons are kind of an abstract notion as it is. But from this point on, the remaining days of the year will get slightly shorter until we reach the winter solstice on December 22. But, that doesn't necessarily mean cooler days, as anyone who has experienced the month of August knows. (And again, for all of those in the southern hemisphere, just the opposite is true.)
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| Solstice and Equinox. (Credit: NASA) |
What causes this change in seasons has everything to do with the tilt of the Earth. The distance of the Earth from the Sun has nothing to do with it, though I know many people who have been incorrectly taught so or envision it this way because the Earth's orbit is slightly oval. In fact, for the northern hemisphere, summer occurs when the Earth is furthest away from the Sun. And if distance were the cause, then both hemispheres would have the seasons at the same time.
What really happens is that the Earth appears to "wobble" around the Sun on its tilted axis. And because one hemisphere is pointed tilted more towards the Sun due to this wobble, it gets more direct sunlight and longer days. This happens until the Sun reaches a certain number of degrees (currently 23° 26′ 16″) north or south of the equator, and then the Sun appears to travel back across the sky to the next point. These lines at north and south are known as the Tropic of Cancer and Tropic of Capricorn, respectfully. And tracing the Sun's path between these two points, every day at the same time, leads to the formation of a figure-8 pattern called an analemma.
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| Solar Analemma over Athens, Greece. The lowest point is on the winter solstice, the highest is the summer, the crossings are the spring and fall equinoxes. (Source) |
Anyways, I hope you have enjoyed the longest day of the year hear in the northern hemisphere. It tends to be a well celebrated day all around the world, and has been since ancient times. Sites like Stonehenge and the ruins of ancient cultures, like the Greeks and Mayans and Egyptians, all have indications of marking the importance of the summer solstice. It's an astronomical event!
Monday, June 20, 2011
So Much Science, So Little Time
2:03 PM
Astronomy Pirate
I hope everyone enjoyed their Father's Day weekend, I know I had some good times with my family. There has been some great astronomy stuff happening (as always) so I figured I'll dump some links.
First up, Life's Little Mysteries is presenting The Greatest Mysteries of the Cosmos every Friday this summer. They are starting with our solar systems and first was The Greatest Mysteries of Venus. It is a great opener to understanding out planetary evil twin.
NASA's Dawn spacecraft is getting closer and closer to asteroid Vesta by the day. It now has a better resolution than the Hubble Space Telescope. The image above was taken on June 14, 2011 from a distance of about 265,000 kilometers. Each pixel spans roughly 25 kilometers. As The Planetary Society explains it:
In the skies of Mars, there was recently an amazing alignment. On June 1, Mars' tiny moon Phobos slipped in front of Jupiter from the view point of the ESA’s Mars Express orbiter. Above is an animation of the event, using photos taken with the Mars Express’ High Resolution Stereo Camera (HRSC). In addition to being a cool event, the observation also helps to improve knowledge of the martian moon's orbital position.
And speaking of tiny moons, the Cassini spacecraft out at Saturn performed a flyby of Helene on June 18. The second-closest flyby of the icy little moon helped to map the surface and better understand the history and gully-like features seen on previous flybys. You can read more about it here.
In other news, the Space Shuttle Atlantis had its final payload delivered on Saturday, June 18. The shuttle is on track for the final flight, STS-135, on July 8. The main payload is the Italian- built “Raffaello” logistics module for the International Space Station, which contains 5 tons of "critical space parts, crew supplies and experiments to sustain space station operations once the shuttles are retired". The secondary payload is dubbed the Robotic Refueling Mission (RRM) – a sort of “gas station in space”.
And finally, tomorrow, June 21, is the longest day of the year for the northern hemisphere, the summer solstice. Hopefully everyone enjoys their long and warm day. Though consequently, it is the shortest day in the southern hemisphere, so keep warm guys.
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| This hemispheric view of Venus was created using more than a decade of radar investigations culminating in the 1990-1994 Magellan mission, and is centered on the planet's North Pole. This composite image was processed to improve contrast and to emphasize small features, and was color-coded to represent elevation. Image Credit: NASA/JPL/USGS |
First up, Life's Little Mysteries is presenting The Greatest Mysteries of the Cosmos every Friday this summer. They are starting with our solar systems and first was The Greatest Mysteries of Venus. It is a great opener to understanding out planetary evil twin.
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| Dawn captured this view of Vesta on June 14, 2011. Credit: NASA / JPL-Caltech / UCLA / MPS / DLR / IDA |
NASA's Dawn spacecraft is getting closer and closer to asteroid Vesta by the day. It now has a better resolution than the Hubble Space Telescope. The image above was taken on June 14, 2011 from a distance of about 265,000 kilometers. Each pixel spans roughly 25 kilometers. As The Planetary Society explains it:
There's clearly a deep crater in the northern part of the image. And the outline is definitely lumpier than the outlines of similarly sized bodies in the outer solar system (like Mimas and Enceladus), but we knew that already; the rock that Vesta is made of is able to hold up steeper mountains than the relatively low-strength ices that outer planet moons are made of. Apart from that, it's still hard to tell what's albedo differences and what's topography. But that won't be true for long.
In the skies of Mars, there was recently an amazing alignment. On June 1, Mars' tiny moon Phobos slipped in front of Jupiter from the view point of the ESA’s Mars Express orbiter. Above is an animation of the event, using photos taken with the Mars Express’ High Resolution Stereo Camera (HRSC). In addition to being a cool event, the observation also helps to improve knowledge of the martian moon's orbital position.
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| Color composite of Helene from June 18, 2011 flyby. There’s a bit of a blur because the moon shifted position in the frames slightly between images. NASA / JPL / SSI / J. Major |
And speaking of tiny moons, the Cassini spacecraft out at Saturn performed a flyby of Helene on June 18. The second-closest flyby of the icy little moon helped to map the surface and better understand the history and gully-like features seen on previous flybys. You can read more about it here.
In other news, the Space Shuttle Atlantis had its final payload delivered on Saturday, June 18. The shuttle is on track for the final flight, STS-135, on July 8. The main payload is the Italian- built “Raffaello” logistics module for the International Space Station, which contains 5 tons of "critical space parts, crew supplies and experiments to sustain space station operations once the shuttles are retired". The secondary payload is dubbed the Robotic Refueling Mission (RRM) – a sort of “gas station in space”.
And finally, tomorrow, June 21, is the longest day of the year for the northern hemisphere, the summer solstice. Hopefully everyone enjoys their long and warm day. Though consequently, it is the shortest day in the southern hemisphere, so keep warm guys.
Friday, June 17, 2011
Firestorm in Centaurus A
6:27 PM
Astronomy Pirate
The Hubble Space Telescope is one of the most amazing tools that astronomers have ever had. I don't think to many people would argue that. But in addition to that, it provides the world with some of the most amazing pictures of our Universe. It shows us a beautiful Universe that would be an abstract artist's dream. And just yesterday, another hit was released to the public: (you are gonna want to click to see the larger image.)
This is a nearby galaxy named Centaurus A, or well, a portion of Cen A. The image shows a close up of the dark and murky dust of Cen A lite up by the fires of starbirth happening throughout the galaxy. It is an interesting and dynamic place to read about.
Unfortunately, I don't have the time to tell you all about it, I am literally on my way out the door for the weekend. I'll be checking comments either late Sunday or on Monday. To read more about this image and Cen A, I suggest checking out Bad Astronomy's article, or Space.com's, and for really huge and detailed version, check out HubbleSite.
This is a nearby galaxy named Centaurus A, or well, a portion of Cen A. The image shows a close up of the dark and murky dust of Cen A lite up by the fires of starbirth happening throughout the galaxy. It is an interesting and dynamic place to read about.
Unfortunately, I don't have the time to tell you all about it, I am literally on my way out the door for the weekend. I'll be checking comments either late Sunday or on Monday. To read more about this image and Cen A, I suggest checking out Bad Astronomy's article, or Space.com's, and for really huge and detailed version, check out HubbleSite.
Thursday, June 16, 2011
MESSENGER Update
6:09 PM
Astronomy Pirate
NASA's MESSENGER probe has been orbiting Mercury for about 3 months now, since it entered orbit on March 18, 2011, being the first spacecraft to do so. In that time, the probe has taken tens of thousands of high resolution images of major features of the planet. It has taken millions of measurements of things like chemical composition, topography, and the magnetic field.
Mercury been as interesting as researchers expected, including a few surprises. NASA had a conference to today that detailed some of the things they are discovering and learning more about on Mercury. Some of the great things so far have been unprecedented surface detail that is revealing landforms unlike anything else known in the Solar System (an example can be seen in the Degas crater above, a surface composition that differs greatly from the Moon (which was thought to be analogous to Mercury, the comparison graph is below), the mapping of craters that might contain water ice or other ices, and building an understanding of energetic particle bursts in Mercury's magnetosphere (thought to be caused by interactions with the Sun).
We have learned a lot about the closest planet to the Sun in the past few months. The best part is that this mission still has another three more years! I think it's best to end with the words of the MESSENGER Principal investigator Sean Solomon of the Carnegie Institution of Washington:
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| Degas crater imaged as a high-resolution targeted observation (90 m/pixel). Impact melt coats its floor, and as the melt cooled and shrank, it formed the cracks observed across the crater. For context, Mariner 10’s view of Degas is shown at left. Degas is 52 km in diameter. Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington |
Mercury been as interesting as researchers expected, including a few surprises. NASA had a conference to today that detailed some of the things they are discovering and learning more about on Mercury. Some of the great things so far have been unprecedented surface detail that is revealing landforms unlike anything else known in the Solar System (an example can be seen in the Degas crater above, a surface composition that differs greatly from the Moon (which was thought to be analogous to Mercury, the comparison graph is below), the mapping of craters that might contain water ice or other ices, and building an understanding of energetic particle bursts in Mercury's magnetosphere (thought to be caused by interactions with the Sun).
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| Major-element composition of Mercury's surface materials as compared to typical lunar surface materials and terrestrial basalts. Mercury appears as unique as the other planets and the Moon. Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington |
We have learned a lot about the closest planet to the Sun in the past few months. The best part is that this mission still has another three more years! I think it's best to end with the words of the MESSENGER Principal investigator Sean Solomon of the Carnegie Institution of Washington:
"We are assembling a global overview of the nature and workings of Mercury for the first time and many of our earlier ideas are being cast aside as new observations lead to new insights. Our primary mission has another three Mercury years to run, and we can expect more surprises as our solar system's innermost planet reveals its long-held secrets."
Tuesday, June 14, 2011
Citizen Scientists
11:36 PM
Astronomy Pirate
I have mentioned these kinds of things in the past, but I think it's good to reiterate, especially if you are a newer reader. I also like encouraging people to be involved in science and understanding the world around them. So, with the Planet Hunters site turning 6 months old, now is a great time to remind people that they can participate in making real discoveries.
Planet Hunters is part of the Zooniverse. According to their about page, "The Zooniverse is home to the internet's largest, most popular and most successful citizen science projects." The projects hosted include Galaxy Zoo, Moon Zoo, the Milky Way Project, of course Planet Hunters, and a couple others. For the most part these are all astronomy projects, and generally presented in a fun and interesting way to public to learn and make discoveries with.
For instance, Planet Hunters has found about 70 candidate systems for exo-planets. Candidates because they still have to confirmed by follow up observations to ensure they are real. But for the most part, these are likely real planets around other stars. This data comes from NASA's Kepler space telescope. There was so much data that researchers couldn't possibly go through it all, so they released it to the public for their aid.
So, now people like you can go online and, with minimal training, start hunting through Kepler data for exo-planets. It's one of those things, that once you start, you kinda get drawn into it. You will tell yourself one more, and 10 minutes later still be sitting there. It is also nice to feel like you are contributing to science. The best part is, if you find a planet, you get credited with its discovery. This is only something a handful of people on the Earth can claim to have done, discover a planet.
The other Zooniverse projects work much the same way. They use data from other great sources like the Hubble Space Telescope, the Spitzer Space Telescope, the Lunar Reconnaissance Orbiter, the STEREO spacecraft (two of them observe the Sun), and other world class telescopes. And again, the reasoning for why they NEED you is because there is such an overwhelming amount of scientific data that researchers just can't go through the piles and piles of it.
Space is huge. We all know that, so the more people that take a couple of minutes to lend a hand, the more we learn about the Universe. It also increases the number of people who have knowledge of this science, a better educated world. You can really learn a few things about astronomy from participating in these projects. It really is win-win, so go be a citizen scientist!
The thing with Planet Hunters being 6 months old though is that this week they're giving you the chance to ask just about anything of the project's scientists and developers. You can ask questions via Planet Hunters Talk at http://talk.planethunters.org/
Planet Hunters is part of the Zooniverse. According to their about page, "The Zooniverse is home to the internet's largest, most popular and most successful citizen science projects." The projects hosted include Galaxy Zoo, Moon Zoo, the Milky Way Project, of course Planet Hunters, and a couple others. For the most part these are all astronomy projects, and generally presented in a fun and interesting way to public to learn and make discoveries with.
For instance, Planet Hunters has found about 70 candidate systems for exo-planets. Candidates because they still have to confirmed by follow up observations to ensure they are real. But for the most part, these are likely real planets around other stars. This data comes from NASA's Kepler space telescope. There was so much data that researchers couldn't possibly go through it all, so they released it to the public for their aid.
So, now people like you can go online and, with minimal training, start hunting through Kepler data for exo-planets. It's one of those things, that once you start, you kinda get drawn into it. You will tell yourself one more, and 10 minutes later still be sitting there. It is also nice to feel like you are contributing to science. The best part is, if you find a planet, you get credited with its discovery. This is only something a handful of people on the Earth can claim to have done, discover a planet.
The other Zooniverse projects work much the same way. They use data from other great sources like the Hubble Space Telescope, the Spitzer Space Telescope, the Lunar Reconnaissance Orbiter, the STEREO spacecraft (two of them observe the Sun), and other world class telescopes. And again, the reasoning for why they NEED you is because there is such an overwhelming amount of scientific data that researchers just can't go through the piles and piles of it.
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| Artist Concept of the Spitzer Space Telescope (NASA) |
Space is huge. We all know that, so the more people that take a couple of minutes to lend a hand, the more we learn about the Universe. It also increases the number of people who have knowledge of this science, a better educated world. You can really learn a few things about astronomy from participating in these projects. It really is win-win, so go be a citizen scientist!
The thing with Planet Hunters being 6 months old though is that this week they're giving you the chance to ask just about anything of the project's scientists and developers. You can ask questions via Planet Hunters Talk at http://talk.planethunters.org/
.