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by Joe McCormick | May 23, 2013
What is a space elevator? How would a space elevator work? Why might we never be able to build a working space elevator?
by Joe McCormick | May 16, 2013
NASA hosts a Google+ Hangout with real astronauts and the Star Trek crew. Read to learn more about how you can watch the Google+ Hangout.
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This Day in History ClassJunko Tabei born - September 22, 1939