This could be why we still haven’t found alien life - Traces left behind by organisms on alien worlds may be too subtle to detect

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

NASA's hunt for alien life may be undermined by its own instruments, according to a group of leading astrobiologists who warn that current tools and mission designs are likely missing subtle, but potentially crucial,

Suppose there are signs of extraterrestrial life and we have not yet been able to detect them. What does that mean? In Nature Astronomy, researchers discuss the consequences of these so-called false-negative results.

Astrophysicist Neil deGrasse Tyson has backed former President Barack Obama after he suggested extraterrestrial life exists. In a February interview with podcast host Brian Tyler Cohen, President

A well-known conspiracy theory (also seen in The X-Files) attests that aliens are in communication with the U.S. government, providing knowledge and advanced weaponry, or engaged in secret wars with the military.

The Trump administration released declassified UAP files featuring Apollo 12 and Apollo 17 photos and transcripts as part of the president's transparency initiative.

President Barack Obama‘s theory that aliens exist got a huge co-signee in Neil deGrasse Tyson. The 64-year-old president said of aliens in February, “They’re real but I haven’t seen them.

How Radio Astronomy Helps Us See the Invisible Cosmos," astrophysicist Emma Chapman describes the hidden corners of space that only radio waves can reveal — and makes the case for contacting aliens.

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 Avi Loeb said Monday on "Fox & Friends" that he examined ...

President Donald Trump on Thursday said that he was directing agencies to release files pertaining to “alien and extraterrestrial life.” Trump wrote on Truth Social that “based on the tremendous interest shown,” he would be directing Defense ...