Messenger Mercury Probe Set for Liftoff
NASA prepares to launch a space probe Monday that will conduct an expedition to the planet Mercury. The Messenger craft -- the name stands for Mercury Surface, Space Environment, Geochemistry and Ranging -- is slated to arrive at Mercury in 2011.
The probe will be launched from Cape Canaveral, where it was recently placed atop a Boeing Delta II rocket.
NPR's David Kestenbaum reports.
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