READ: Half of Americans Believe Aliens Have Visited Earth, New Poll Shows

A new YouGov survey shows that belief in extraterrestrial life has firmly entered the American mainstream. What was once a fringe idea is now a majority view: 56% of Americans say aliens definitely or probably exist, and nearly half believe those visitors have already made their way to Earth. For many, the question is no longer if extraterrestrials exist, but when we’ll encounter them again.