The former president joked during an interview with YouTuber Brian Tyler Cohen about the extraterrestrials, saying they're real but he hasn't seen them.

Obama said, “There’s no underground facility [in Area 51] unless there’s this enormous conspiracy and they hid it from the president of the United States.” Area 51, a U.S. Air Force base in Nevada, has enraptured pop culture for decades.

The name Area 51 instantly brings to mind flying saucers, alien autopsies and government cover-ups. In reality, Area 51 is a highly classified US military testing site in Nevada. But decades of secrecy have helped turn it into one of the world's most persistent "alien" legends.

Attention, local extraterrestrial believers and conspiracy theorists: former President Barack Obama said in a podcast interview Saturday that aliens are real, but they aren’t at Nevada’s Area 51. During an appearance on YouTuber Brian Tyler Cohen’s show,

Trump suggested that Obama’s remarks, if based on intelligence briefings received during his presidency, could amount to disclosing sensitive material

Scientists say aliens are not hiding in Area 51. Experts believe life may exist on distant planets with water and the right temperature. Some moons in our Solar System, like Enceladus and Titan, may also have hidden oceans where life could survive.

Area 51, a classified US military testing site in Nevada, became synonymous with aliens due to Cold War secrecy, UFO sightings and decades of speculation.