A rock retrieved from a near-Earth asteroid is crawling with microbial life, scientists have discovered. But the bacteria on its surface almost certainly came from Earth. The sample is part of a ...

Add Yahoo as a preferred source to see more of our stories on Google. In Universal Pictures' 1971 movie The Andromeda Strain, based on the Michael Crichton novel of the same name, a satellite crashes ...

NASA's Perseverance Mars rover is collecting samples that could be evidence of ancient alien life. But NASA's Mars Sample Return mission to bring them to Earth will now cost $11 billion and take two ...