Jupiter has lots. Mars has some, too, as does Neptune. Turns out Earth's got a trojan asteroid of its own. Meet 2010 TK7, the blue planet's new baby brother.
posted by Sys Rq on Jul 29, 2011 - 51 comments

Time lapse footage of Earth taken by Don Pettit during his time on the International Space Station. [more inside]
posted by gman on Sep 3, 2010 - 19 comments

On July 17th, NASA's Wide-field Infrared Survey Explorer (WISE) satellite completed its first survey of the entire sky viewable from Earth. After just seven months in orbit, WISE -- a precursor to the planned James Webb Space Telescope -- has returned more than a million images that provide a close look at celestial objects ranging from distant galaxies to asteroids. The first release of WISE data, covering about 80 percent of the sky, will be delivered to the astronomical community in May of next year, but in the meantime we can see some of the images and animations that NASA has released to date: Galleries (containing just a small selection of images): 1, 2, 3, 4. Videos and Animations: 1, 2 [more inside]
posted by zarq on Jul 24, 2010 - 11 comments

How would the Earth look if it had a ring system like Saturn?
posted by DU on Nov 20, 2009 - 123 comments

Moon Landing Tapes Found! [more inside]
posted by sexyrobot on Jul 2, 2009 - 93 comments

Not content to merely index all things terrestrial, Google Earth now lets you set your sights on the sky.
posted by the painkiller on Aug 22, 2007 - 23 comments

Transit of Mercury again. here Transit of Mercury again. Today -- and not for another seven years or so -- Mercury passes between the Earth and the Sun, shwoing up a speck-like black circle. But don't look. Starting times, real-time visual, ways to see it and another caution are here. rotoman
posted by rotoman on Nov 7, 2006 - 40 comments

World Sunlight Map. A neat little map showing the encroaching blob of darkness as parts of the world slip in and out of nighttime.
posted by Salmonberry on Nov 28, 2004 - 33 comments

Pale Blue Dot: The Earth and Moon as photographed from Mars. Just in case you needed a bit of perspective.
posted by aladfar on May 22, 2003 - 14 comments

Earth from satellite. Something kind of neat for the astronomy geek is us all.
posted by goto11 on Nov 16, 2001 - 12 comments

Reflections on a Mote of Dust "We succeeded in taking that picture [from deep space], and, if you look at it, you see a dot. That's here. That's home. That's us. On it, everyone you ever heard of, every human being who ever lived, lived out their lives. The aggregate of all our joys and sufferings, thousands of confident religions, ideologies and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilizations, every king and peasant, every young couple in love, every hopeful child, every mother and father, every inventor and explorer, every teacher of morals, every corrupt politician, every superstar, every supreme leader, every saint and sinner in the history of our species, lived there on a mote of dust, suspended in a sunbeam." Carl Sagan "Pale Blue Dot"
posted by crasspastor on Sep 11, 2001 - 15 comments

We are not alone.... a new planet outside of our solar system was found today. It's only a matter of time before the little green men come down to greet us.
posted by mathowie on Nov 13, 1999 - 0 comments