What does a dying comet look like? This. The comet ISON, previously declared dead as it circled the sun, then thought alive when pieces of it appeared to survive, is, in fact, dead, the Harvard-Smithsonian Center for Astrophysics announced today. Its demise was captured by the SOHO spacecraft. Astrophysicist Karl Battams, at the Comet ISON Read more

That dot there? That’s us. NASA’s Cassini spacecraft took pictures of Earth from nearly 900 million miles away on Friday. It took a day to send them back. Cassini fans took the images, stretched and pasted them, adjusted the color. Guillermo Abramson, a physicist at Argentina’s Bariloche Atomic Center, came up with this striking image. Read more