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Posted: 4/22/2015 1:47:00 PM EDT
[#1]
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Posted: 4/22/2015 8:40:43 PM EDT
[#2]
Mars's moon Phobos eclipsing the sun taken by Curiosity rover's camera:
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Posted: 4/22/2015 9:43:05 PM EDT
[#3]
Photo of Curiosity taken from Mars Orbiter |
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Posted: 4/22/2015 10:33:35 PM EDT
[#4]
Quote HistoryQuoted: Photo of Curiosity taken from Mars Orbiter http://www.nasa.gov/jpl/mro/mars-orbiter-views-curiosity-rover-in-artists-drive The milky way has several dwarf galaxies orbiting it. Two of which are called the small and large Magellanic clouds. They were named after Ferdinand Magellan because their sighting on his voyage circumnavigating the globe brought their existence into common knowledge to western Europe. This is because they are not visible to people in northern latitudes. Image of the LMC and SMC: High Res  Gravitational forces from the milky way are ripping the two apart and striping them of their hydrogen gas and dust. This can be seen when you look at them in the radar spectrum:  |
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Posted: 4/23/2015 12:01:12 AM EDT
[#5]
Here is an image of the asteroid Ida and its "moon" Dactyl:
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Posted: 4/23/2015 12:13:49 AM EDT
[#6]
who the fuck names a moon "Toe" "Foot"?
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Posted: 4/23/2015 12:38:59 AM EDT
[#7]
Quote HistoryQuoted: who the fuck names a moon "Toe" "Foot"?  |
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Posted: 4/23/2015 9:02:31 PM EDT
[#8]
If you can tell me what's odd about this galaxy you win 100 interwebz. If you are not a member you win a membership. No cheating:
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Posted: 4/23/2015 9:14:38 PM EDT
[#9]
I'm still trying to find a dumbed down way to understand how gravity can slow time
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Posted: 4/23/2015 9:46:20 PM EDT
[#10]
Quote HistoryQuoted:
If you can tell me what's odd about this galaxy you win 100 interwebz. If you are not a member you win a membership. No cheating: http://tahistaeva.pri.ee/galerii/Galaktikad/NGC%204622%20S.jpg I cheat, but I won't say what it is (or what I think it is since I cheated).
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Posted: 4/23/2015 9:55:32 PM EDT
[#11]
It spins counter-clockwise
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Posted: 4/23/2015 10:09:31 PM EDT
[#12]
Quote HistoryQuoted: It spins counter-clockwise   Or edge for that matter:  |
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Posted: 4/23/2015 10:34:34 PM EDT
[#13]
Quote HistoryQuoted:
Nope, a galaxy simply spinning one way or the other just depends on which side you look at it from: http://images.nationalgeographic.com/wpf/media-live/photos/000/010/cache/messier-81_1086_600x450.jpg http://www.space.com/images/i/000/027/694/i02/m-74-spiral-galaxy.jpg?1364988866 Or edge for that matter: http://www.kcvs.ca/martin/astro/au/unit5/121/ngc4565a.jpg Quote HistoryQuoted:
Quoted:
It spins counter-clockwise http://images.nationalgeographic.com/wpf/media-live/photos/000/010/cache/messier-81_1086_600x450.jpg http://www.space.com/images/i/000/027/694/i02/m-74-spiral-galaxy.jpg?1364988866 Or edge for that matter: http://www.kcvs.ca/martin/astro/au/unit5/121/ngc4565a.jpg Ok then the supernova top, left of the center?
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Posted: 4/24/2015 11:01:41 AM EDT
[#14]
Quote HistoryQuoted:
who the fuck names a moon "Toe" "Foot"? the Fithp |
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Posted: 4/24/2015 12:23:54 PM EDT
[#15]
Quote HistoryQuoted:
the Fithp Quote HistoryQuoted:
Quoted:
who the fuck names a moon "Toe" "Foot"? the Fithp
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Posted: 4/24/2015 7:39:32 PM EDT
[#16]
Quote HistoryQuoted:
That super-gigantic 12-trillion solar mass black hole? Try this: That's roughly 3 to 5 times the mass of the entire Milky Galaxy. How far from that thing does a star, for example, need to be to not eventually get sucked in? |
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Posted: 4/24/2015 7:39:47 PM EDT
[#17]
Quote HistoryI want somebody to ask him about that meme. |
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Posted: 4/26/2015 2:15:40 AM EDT
[#18]
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Posted: 4/26/2015 2:16:52 AM EDT
[#19]
Quote HistoryQuoted: Ok then the supernova top, left of the center? Quote HistoryQuoted: Quoted: Quoted: It spins counter-clockwise http://images.nationalgeographic.com/wpf/media-live/photos/000/010/cache/messier-81_1086_600x450.jpg http://www.space.com/images/i/000/027/694/i02/m-74-spiral-galaxy.jpg?1364988866 Or edge for that matter: http://www.kcvs.ca/martin/astro/au/unit5/121/ngc4565a.jpg Ok then the supernova top, left of the center? |
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Posted: 4/26/2015 4:04:57 PM EDT
[#20]
There are some rare galaxies that don't rotate. Is this one of them?
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Posted: 4/26/2015 4:20:57 PM EDT
[#21]
Quote HistoryQuoted:
If you can tell me what's odd about this galaxy you win 100 interwebz. If you are not a member you win a membership. No cheating: http://tahistaeva.pri.ee/galerii/Galaktikad/NGC%204622%20S.jpg Isn't that the one that spins the opposite way it should? Against the spiral instead of the direction with it? |
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Posted: 4/26/2015 5:51:23 PM EDT
[#22]
Quote HistoryQuoted:
If you can tell me what's odd about this galaxy you win 100 interwebz. If you are not a member you win a membership. No cheating: http://tahistaeva.pri.ee/galerii/Galaktikad/NGC%204622%20S.jpg Star formation in arms instead of center? No black hole in center? Idk, waiting for answer. |
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Posted: 4/26/2015 10:57:12 PM EDT
[#23]
Quote HistoryQuoted: Isn't that the one that spins the opposite way it should? Against the spiral instead of the direction with it? Quote HistoryQuoted: Quoted: If you can tell me what's odd about this galaxy you win 100 interwebz. If you are not a member you win a membership. No cheating: http://tahistaeva.pri.ee/galerii/Galaktikad/NGC%204622%20S.jpg Isn't that the one that spins the opposite way it should? Against the spiral instead of the direction with it? That is NGC 4622. The outer arms are spinning in the wrong direction, however if you look closely there are inner arms that are spinning in the correct direction. The best guess is that it had collided or merged with something that reversed it's direction. You will also notice that unlike most spiral galaxies there are very few nebulae leaving the galaxy with mostly old yellow stars. This is consistent with a galactic merger or collision.   |
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Posted: 4/26/2015 11:01:46 PM EDT
[#24]
Quote HistoryQuoted: There are some rare galaxies that don't rotate. Is this one of them?  |
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Posted: 4/26/2015 11:25:51 PM EDT
[#25]
Quote HistoryI saw boobs first |
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Posted: 4/27/2015 1:27:22 AM EDT
[#26]
The Star Achernar rotates so fast it's shape is oblate. 139 light years from the Solar System, located in the Eridanus constellation.
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Posted: 4/27/2015 1:39:49 AM EDT
[#27]
Quote HistoryQuoted:
No warning. Any universe ending event or phase shift (has happens before) happens at the speed of light.. Can't see it coming until its too late. Quote HistoryQuoted:
Quoted:
Since what we see is light years old history, how much warning do we get when our universe has some final ending? Light seems to lie to us, not telling us what's now - it tells us what was. Just thinking out loud, actually thought of this last week - but it took this long to get posted. No warning. Any universe ending event or phase shift (has happens before) happens at the speed of light.. Can't see it coming until its too late. Thanks to that, the very speed of light, we would see the end coming for quite some time. Your first visible hint would be when the stars start disappearing from view. |
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Posted: 4/27/2015 2:41:42 AM EDT
[#28]
Quote HistoryQuoted:
Thanks to that, the very speed of light, we would see the end coming for quite some time. Your first visible hint would be when the stars start disappearing from view. Quote HistoryQuoted:
Quoted:
Quoted:
Since what we see is light years old history, how much warning do we get when our universe has some final ending? Light seems to lie to us, not telling us what's now - it tells us what was. Just thinking out loud, actually thought of this last week - but it took this long to get posted. No warning. Any universe ending event or phase shift (has happens before) happens at the speed of light.. Can't see it coming until its too late. Thanks to that, the very speed of light, we would see the end coming for quite some time. Your first visible hint would be when the stars start disappearing from view. Doesn't work like that. You would still see the light from those stars long after something blocked/destroyed them.. While the light takes that long to reach us, a sudden dimming of that light would also take the same amount of time to reach us. Think of light like an infinitely long length of vertical rope that you are watching through a ship port hole window. At any given time, you can only see a short part of the rope through your window. Now imagine this rope is always falling. If the rope get's cut 10 miles up, you won't know the rope ends until the end comes flying past your porthole. That's kind of how light works. |
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Posted: 4/27/2015 7:58:07 PM EDT
[#29]
Quote HistoryQuoted:
Correct, log in and log out. That is NGC 4622. The outer arms are spinning in the wrong direction, however if you look closely there are inner arms that are spinning in the correct direction. The best guess is that it had collided or merged with something that reversed it's direction. You will also notice that unlike most spiral galaxies there are very few nebulae leaving the galaxy with mostly old yellow stars. This is consistent with a galactic merger or collision. http://www.daviddarling.info/images/NGC_4622.jpg http://upload.wikimedia.org/wikipedia/commons/a/aa/NGC4622ArmPairs.jpg Quote HistoryQuoted:
Quoted:
Quoted:
If you can tell me what's odd about this galaxy you win 100 interwebz. If you are not a member you win a membership. No cheating: http://tahistaeva.pri.ee/galerii/Galaktikad/NGC%204622%20S.jpg Isn't that the one that spins the opposite way it should? Against the spiral instead of the direction with it? That is NGC 4622. The outer arms are spinning in the wrong direction, however if you look closely there are inner arms that are spinning in the correct direction. The best guess is that it had collided or merged with something that reversed it's direction. You will also notice that unlike most spiral galaxies there are very few nebulae leaving the galaxy with mostly old yellow stars. This is consistent with a galactic merger or collision. http://www.daviddarling.info/images/NGC_4622.jpg http://upload.wikimedia.org/wikipedia/commons/a/aa/NGC4622ArmPairs.jpg Sweet, thank you. 
I read about it a few weeks ago when reading a bunch of random stuff from this thread about the Hubble telescope.
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Posted: 4/29/2015 10:09:26 PM EDT
[#30]
our sun compared to blue supergiant
http://svs.gsfc.nasa.gov/vis/a010000/a011200/a011250/Sun-Star_Scale_FINAL_1080_Unlabeled.jpg 
Neutron Stars scroll all the way down  At these incredibly high densities, you could cram all of humanity into a volume the size of a sugar cube.
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Posted: 4/30/2015 1:47:49 PM EDT
[#31]
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Posted: 4/30/2015 3:06:33 PM EDT
[#32]
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Posted: 5/1/2015 11:22:41 AM EDT
[#33]
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Posted: 5/1/2015 1:19:24 PM EDT
[#34]
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Posted: 5/1/2015 1:20:36 PM EDT
[#35]
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Posted: 5/1/2015 1:25:29 PM EDT
[#36]
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Posted: 5/1/2015 1:27:05 PM EDT
[#37]
Io emerging from Jupiter's shadow:  |
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Posted: 5/1/2015 1:34:57 PM EDT
[#38]
Saturn's moon Hyperion:
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Posted: 5/1/2015 1:50:18 PM EDT
[#39]
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Posted: 5/1/2015 2:05:00 PM EDT
[#40]
Quote HistoryWhat spacecraft is that? The photo lists it as SpaceStation but it looks more like the old Soviet stations than the ISS. |
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Posted: 5/1/2015 2:19:32 PM EDT
[#41]
Quote HistoryQuoted: What spacecraft is that? The photo lists it as SpaceStation but it looks more like the old Soviet stations than the ISS. Quote HistoryQuoted: What spacecraft is that? The photo lists it as SpaceStation but it looks more like the old Soviet stations than the ISS.  |
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Posted: 5/1/2015 2:33:08 PM EDT
[#42]
It looks so big compared to the moon. What craft took the photo - or is it a photoshopped image - with the ISS from one camera and the moon from another?
ETA: Neat GIF ! |
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Posted: 5/2/2015 6:53:44 PM EDT
[#43]
Everyone knows that the edge of the observable universe is 14 billion light years away give or take a little right? Wrong. The light we see from the edge is that far away. Because the space between here and there has been expanding while the light in transit for 14 billion years the objects we are seeing at the edge are now about 47 billion light years away.
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Posted: 5/3/2015 9:52:10 PM EDT
[#44]
Only the super condensed nucleus of Andromeda is visible from Earth, this is due to light pollution from the Milky Way. If it were significantly brightened, this is what it would look like next to the moon.
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Posted: 5/5/2015 6:51:04 PM EDT
[#45]
Just got my new scope and sure as shit it's going to be cloudy for a week.
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Posted: 5/6/2015 1:26:53 PM EDT
[#46]
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Posted: 5/6/2015 1:41:57 PM EDT
[#47]
This is related to this post.
One way we could possibly find indirect evidence of life on an exoplanet is by doing spectroscopy on it's atmosphere. Diatomic oxygen is exceedingly rare in the universe. Pretty much the only way for it to be in high concentrations in a planet's atmosphere is from lifeforms producing it in mass. The way we can detect that oxygen is by taking a spectrum of the light coming from a star while an exoplanet is in front of it and look for absorption lines in the light that passed through the planets atmosphere. We can also do this for bodies in our own solar system when they pass in front of a large star.   |
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Posted: 5/6/2015 1:45:01 PM EDT
[#48]
The sun had an X-Class solar flare yesterday. Video at link: http://www.space.com/29326-biggest-sun-solar-flare-2015-video.html
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Posted: 5/6/2015 1:49:30 PM EDT
[#49]
Oldest known galaxy yet:  The galaxy, more than a few billion light-years on the other side of the northern constellation Boötes, is one of the most massive and brightest in the early universe and goes by the name of EGS-zs8-1. It flowered into stardom only 670 million years after the Big Bang. The light from that galaxy has taken 13 billion years to reach telescopes on Earth. By now, however, since the universe has continued to expand during that time, the galaxy is about 30 billion light-years away, according to standard cosmological calculations. |
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Posted: 5/6/2015 2:04:06 PM EDT
[#50]
Two co-orbiting supermassive black holes surrounded by multimillion degree x-ray emitting gas and blasting out jets of relativistic particles:  |
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