Astronomers have searched the skies for signs of extraterrestrial technology for decades. These searchers since 1960 have scanned the Milky Way for radio waves, optical flashes, infrared heat and other technological signatures indicative of advanced aliens.

In an Instagram post on Sunday, Obama said he had been trying to “stick with the spirit” of his interviewer, political commentator Brian Tyler Cohen, during a wide-ranging podcast released Saturday. During a speed round, Obama told Cohen that aliens are real.

A new paper posits that advanced alien civilizations may communicate through subtle flashes, like fireflies do on Earth. The thought experiment suggests that we need to avoid human biases in our search for extraterrestrial life. When you purchase through ...

Add Yahoo as a preferred source to see more of our stories on Google. (Photo by BRENDAN SMIALOWSKI/AFP via Getty Images) A new genetic study claims alien DNA could be inserted into humans. Dr. Max Rempel, a molecular biologist with a PhD from the Institute ...