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Astronaut on Space Station truss

Astronaut Soichi Noguchi perched on a Space Station truss in 2005. Cheaper, more efficient ways of reaching space will eventually be important to humanity's survival.

Credit: Stephen K. Robinson/Reuters/NASA

When the Russian asteroid became a fireball in the air over Chelyabinsk, destroying buildings and injuring hundreds, we were lucky it wasn’t worse.

From Slate
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