John M. Grunsfeld

John M. Grunsfeld

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  NASA craft's planet-hunting days may be numbered

  NASA's planet-hunting Kepler telescope is broken, potentially jeopardizing the search for other worlds where life could exist outside our solar system 

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  Mars redux: NASA to launch Curiosity-like rover

  If you thought NASA's latest Mars landing was a nail-biter, get ready for a sequel. The space agency on Tuesday announced plans to launch another ...