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 ...

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 ...

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 ...