12 Things Elon Musk Wants to Build

By Mark Milian - 2013-08-13T21:19:54Z

Courtesy SpaceX

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Reusable Rocket

There are many reasons why space travel is expensive, but here's a big one: Rockets can only be used once. Musk's SpaceX is developing a vehicle that can fly through space, re-enter Earth's atmosphere, land vertically on a launch pad and still be able to take off again later. Today's rockets typically shed parts before returning home and then crash land into the ocean.

SpaceX has built a suborbital test rocket, called the Grasshopper, which has successfully launched and landed safely. The next steps include building rockets that can go on journeys through space and back.

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