Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.

Astrobiologists are raising concerns that humanity’s search for alien life may be limited by the very tools designed to find it.

The current prevailing idea is that extraterrestrial life would manifest itself as a unique and obvious signal, whether ...

Suppose there are signs of extraterrestrial life and we have not yet been able to detect them. What does that mean? In Nature ...

A Harvard professor said Monday he may have uncovered evidence of alien life in the universe and told Americans it would fundamentally change their understanding of their existence. Harvard Professor ...

A well-known conspiracy theory (also seen in The X-Files) attests that aliens are in communication with the U.S. government, ...

The Trump administration released declassified UAP files featuring Apollo 12 and Apollo 17 photos and transcripts as part of ...

How Radio Astronomy Helps Us See the Invisible Cosmos," astrophysicist Emma Chapman describes the hidden corners of space ...

Spielberg’s hotly anticipated new movie gives fresh impetus to a dilemma that has long captured the imaginations of filmgoers, scientists and the great director himself ...