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.

The third known visitor from another star system, Comet 3I/ATLAS, has been racing through the Solar System with just enough weirdness to ignite a familiar debate: is it natural or could it be technology. To move that argument out of the realm of ...

YouGov, a research and analytics firm, found last year that most Americans believe in aliens. Its poll results showed in November that 56% of adults, including 61% of Democrats and 46% of Republicans, said there is extraterrestrial life.