Elon Musk has unveiled his ambitious plans to build both a lunar base and a city on Mars. And he plans to start in just five years. 

Using his SpaceX company’s upcoming BFR rocket, Musk hopes to send two unmanned cargo ships to the Red Planet in 2022 and human passengers just two years later. 

“That’s not a typo,” Musk said on Friday during his presentation at the International Astronautical Congress in Australia. “Although it is aspirational.” 

If that timeframe isn’t met, he said, it will be “soon thereafter.” 

What will begin as a small settlement on Mars is expected to grow into a city: 

Over time, Mars will be terraformed, Musk said, “making it really a nice place to be.” 

The CEO of both SpaceX and

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