Leading astronomers say micro-organisms could live beneath the icy surface of comets.
The Philae spacecraft broke its silence on Saturday by sending a signal back to Earth from the comet 67P/Churyumov-Gerasimenko.
The first ever attempt to land a man-made object on a comet will begin November 12th.
The space agency’s Inspector General warns the Near Earth Objects program needs to be better organized and managed, with a bigger staff.
After harvesting strange organisms from space, a team of British scientists claim to have found proof of alien life.