Elon Musk has made a terrifying prediction on what he believes will ultimately kill us all on Earth.
The 51-year-old South African-born billionaire was having a discussion with Fox News host Tucker Carlson, where he was talking about alien life and what he believes will cause the end of human civilization.
It was during that conversation that Musk admitted he wasn't sure whether alien life exists, and added that humans take for granted the fact that there's no evidence of "conscious life" anywhere in the universe besides Earth, The New York Post detailed.
"A lot of people ask me, you know, where are the aliens? And I think if anyone would know about aliens on Earth it would probably be me. Yeah, I'm, you know, very familiar with space stuff. And I've seen no evidence of aliens … I would immediately tweet it out. That'd be probably the top tweet of all time. 'We found one, guys!' It's the jackpot with some eight billion likes," the Twitter CEO told Carlson.
Musk did add that while he hopes that extraterrestrials are real, he doesn't believe the government would have any reason to hide their existence from the public - especially as it would be in their best interests not to. "We're constantly trying to get the defense budget to expand. And look, you know what would really get no arguments for anyone? If we pulled out an alien and said we need money to protect ourselves from these guys," he said.
"'How much money do you want? You got it. They look dangerous.' So the fastest way to get a defense budget increase would be to pull out an alien," the father-of-eight added.
The SpaceX founder did also touch upon what he feels are the biggest threats to human existence, and his answer was rather surprising - the tech billionaire believes that humans are the biggest threat to their own existence, highlighting falling birth rates across the globe.
In fact, Musk tweeted that Italy would "have no people" after it ranked as one of the lowest birth rates in the world.
Last year, Musk posted a graph depicting falling birth rates in the USA, commenting that they have been below the minimum sustainable level for roughly 50 years.
He then added in a later tweet: "Italy will have no people if these trends continue."
"There's sort of a life cycle arc to civilizations, just as there to individual humans. I'm sort of worried that, 'Hey, civilization, if we don't make enough people to at least sustain our numbers, perhaps increase a little bit, then civilization is going to crumble.'
"The old question of like, will civilization end with a bang or a whimper. Well, it's currently trying to end with a whimper in adult diapers, which is depressing as hell," Musk told Carlson.