New Delhi, Feb. 15 -- Former US President Barack Obama said he believes extraterrestrial life exists, but acknowledged that he does not know where such beings might be, in a podcast interview with YouTuber Brian Tyler Cowen, released on Saturday.

"They're real, but I haven't seen them," Obama said. He added, "They're not being kept in Area 51, there's no underground facility, unless there's this enormous conspiracy and they hid it from the president of the United States."

Area 51 is reportedly a top-secret US Air Force facility located at Groom Lake in Nevada. For decades, it has attracted the attention of conspiracy theorists who claim the government is concealing alien spacecraft and extraterrestrial remains at the site.

Some theorie...