While many sci-fi hits have spawned extended franchises, these standalone works prove that science fiction movies can leave ...

Fresh orbital images and new geological analysis have revealed eight mysterious caves on Mars that appear unusually well ...

If nonliving materials can produce rich, organized mixtures of organic molecules, then the traditional signs we use to ...

In a quiet corner of an ancient riverbed on Mars, a speckled rock has pushed the search for extraterrestrial life into its ...