Elon Musk says he has a new timeline for his big Mars project — and it's sooner than you might think.
"I'll be surprised if we're not landing on Mars within five years," Musk told Time Magazine, about SpaceX taking humankind to Mars in a story published Monday.
Musk, the 50-year-old SpaceX founder and CEO who was named Time's Person of the Year, has big plans for the Red Planet: namely, a self-sustaining city with solar-powered hydroponic farms where humans can permanently live, 34 million miles away from Earth.
"The next really big thing is to build a self-sustaining city on Mars and bring the animals and creatures of Earth there," Musk told Time. "Sort of like a futuristic Noah's ark. We'll bring more than two, though — it's a little weird if there's only two."
In February , space policy expert and Arizona State University professor Greg Autry told Business Insider that Musk likely won't reach Mars until at least 2029, with or without NASA's help.
Other space experts say Mars probably can't sustain long-term human settlement at all. Musk himself told nonprofit XPrize in April that some astronauts will "probably die" en route to Mars.