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

We frequently question whether we are alone in the universe. If not, what does intelligent life look like? And how would ...

As a lifelong fan of the “Alien” franchise, the announcement of “Alien: Earth” was a momentous occasion for me. The series, set two years before Ridley Scott's 1979 classic, promised to delve deeper ...