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

Harvard physicist Avi Loeb says humanity is on the brink of a 'major revolution' as advances in artificial intelligence and the search for alien life accelerate, telling a reporter in Athens this week that the coming decades could make our future 'completely different' from our past if evidence of extraterrestrial intelligence is finally found.

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 US has recovered four distinct species of extraterrestrial life from crashed UFOs, a former CIA-funded government researcher sensationally claimed this week. Dr. Hal Puthoff, former Advanced Aerospace Weapon System Applications Program advisor and CIA-funded researcher,

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

"Never-before-seen files" on UAPs posted by US Department of War, including some images taken by Apollo missions.