NASA's Curiosity Lands On Red Planet
by: Joe Palca, NPR, August 6, 2012 3:08:00 am
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The rolling NASA laboratory called Curiosity has begun its two-year mission on the Red Planet. The nuclear-powered robot pulled off a tricky touchdown in a Martian crater. There is a lot riding on this mission - not the least is the $2.5 billion price tag.
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