From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

It now has not one but two new options to choose from — both are faster and cheaper. The samples could return as soon as 2035 and may contain the first-ever signs of ancient alien life. The ...

The Search for Extraterrestrial Intelligence (SETI) focuses on finding technosignatures—potential signs of alien technology. If we look carefully, we might have a chance at detecting their ...

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 ...