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Today, SpaceX CEO Elon Musk said he hopes to finance his plans to colonize Mars by making SpaceX’s entire fleet of vehicles — the Falcon 9, the Falcon Heavy, and the Dragon spacecraft — obsolete.

Speaking at the International Astronautical Congress, Musk said that SpaceX will eventually start stockpiling these vehicles and then focus all of its resources into developing the company’s next monster vehicle: the Interplanetary Transport System, codenamed the BFR (for Big Fucking Rocket).

Musk is planning to scale down the ITS, proposing 31 main engines this year. Last year at the same conference, Musk unveiled the combo rocket-and-spaceship’s design, which included 42 main Raptor engines that could send up to 450 metric tons to Mars. Most…

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