Cuddly physicist Stephen Hawking thinks doomsday is almost upon us, telling a new BBC documentary Expedition New Earth (airing on June 15) humans have just 100 years left on the planet — and we need to get off PRONTO!

Of course, this isn’t the first time Hawking has tried to light a fire under our asses.

Via WeForum:

In recent years, he’s warned about how super artificial intelligence (AI) would end humankind and how contacting extraterrestrial life would go bonkers for humanity. Then in November of last year, he said we have 1,000 years to leave Earth. Now, he’s cut it down to 100 — leaving us to wonder just how bad the past six months have been. They’d arguably have to have been pretty bad for Hawking to drastically cut our time on Earth by 900 years in one fell swoop.

Well, let’s see. There’s Trump, North Korea, climate change, asteroid strikes, epidemics, and overpopulation. And that’s just THIS WEEK’S problems. Hawking suggests we need to change planets, and fast.

A lot could happen in 100 years, and we’ve proven that we’re capable of discovering and developing many things within a century. But could we really go multi-planetary in that timeframe?

Tesla and SpaceX founder and CEO Elon Musk thinks so, and he’s already outlined plans to make it happen. The destination for humanity in his mind? Mars. And while the Red Planet isn’t exactly that near, neither is it too far. Musk intends to land people to Mars by 2025 and set up a colony by 2033 — which is well within Hawking’s timeline. However, reaching Mars and setting up a stable habitat could take a couple more decades at least. Fortunately, there are others working on it, too: NASA already has a program for getting to Mars, and China’s also working on its own mission to the Red Planet.

Save us, Elon!

(Photo: Pacific Coast News)