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| Low Earth Orbit (LEO)
Heinlein pointed out that once you "get to low-Earth orbit and you're halfway to anywhere in the solar system." But how can we get there in an inexpensive, safe, and reliable manner? |
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| Geo-Synchronous Earth Orbit (GEO)
Also known as the Clarke Orbit, it is about 36,000km above us, where objects in orbit stay above a fixed point on the surface. How do we get there, and what can we do once we are? |
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