January 22, 2013 in Nation/World
File photo

John Grunsfeld, NASA associate administrator, looks back as the spacecraft Cassini is seen in the background, during a news briefing about NASA’s Mars Science Laboratory Curiosity rover at Jet Propulsion Laboratory in Pasadena, Calif., in August. The Curiosity robot is equipped with a nuclear-powered lab capable of vaporizing rocks and ingesting soil, measuring habitability and potentially paving the way for human exploration.

 
 
 
 

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