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

Harvard astronomer and origin of the unnecessary "alien spacecraft" hypothesis has admitted that interstellar comet 3I/ATLAS ...

For more than a century, popular culture has trained us to picture extraterrestrials as bug-eyed, bipedal “little green men” ...

Diversity in the ancient world meant both inter-dependency and the presence of foreign agents who would ally with the drones ...