View Full Version : Ep. 144: Space Elevators

2009-Jul-23, 04:50 PM
If you want to travel into the Solar System, you have to get off the Earth. Traditionally, that meant blasting off in a rocket. But there's another strategy for escaping the Earth's gravity. Climb to the top of an extremely tall tower, and just jump away. That's the idea behind space elevators. Theoretically possible, but practically unfeasible, space elevators have gotten new life thanks to new, super strong materials.http://feeds.feedburner.com/~r/astronomycast/~4/wHBEffLNA5Y

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