Watch Elon Musk reveal SpaceX's most detailed plans yet to start colonizing Mars in just 7 years

Elon Musk wants to build a metropolis on Mars starting in 2024. At this year'sInternational Astronautical Congress, Musk revealed some of the most detailed plans we've seen yet to achieve this goal. It starts with building up a revenue stream using SpaceX's current fleet of reusable Falcon 9 rockets and Dragon spacecraft. This will provide, Musk said, the funding necessary to build SpaceX's most powerful rocket, dubbed the Big F***ing Rocket (BFR for short). Musk has big plans for the BFR. Namel...