Add Yahoo as a preferred source to see more of our stories on Google. The best reason to send humans to Mars isn’t for guts or glory—or the construction of colonies to safeguard against existential ...

A new book details the turn-of-the-century Mars craze It’s not aliens. It’s never aliens. Claims of extraterrestrial life are so common that experts now have this cheeky retort at the ready. In The ...

Mars was once home not only to an ocean but "vacation-style" beaches with sun, sand and softly lapping waves, new findings suggest. Researchers now believe that the planet was covered in a huge ocean ...

Since humanity’s first steps on the Moon, the aspiration to extend human civilization beyond Earth has been a central objective of international space agencies, targeting long-term extraterrestrial ...