Extraterrestrial Life

The alien comets could illuminate the history of their planetary system

An updated communication could be beamed out for space alien listeners in hopes of making first contact

A new theory suggests that searches for molecular complexity could uncover convincing evidence of extraterrestrial life—and do so soon

Sparked by major advances in their field, astrobiologists are grappling with how best to discuss possible breakthrough discoveries with the public

The radio signal seemed to originate from the star Proxima Centauri and provided a helpful drill for future searches

Humanity’s greatest achievement might be building our successors

Much of astrobiology is focused on looking for organisms with chemistry similar to ours—but there could well be other kinds

The Galileo Project seeks to train telescopes on unidentified aerial phenomena

If they exist, they’ll find our puny forays into space completely insignificant

An ancient civilization from a distant star could have created immortal machines to roam the Milky Way and keep its legacy alive

The search for technological relics of extraterrestrial civilizations will inspire the public and attract talent to the field of astronomy

Project Galileo could make that happen sooner rather than later