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New NASA mission to probe celestial lighthouses

Elizabeth Howell, Contributor
09 April 2013, 12:04

Sen—Spinning in space are incredibly dense stars that shoot out X-rays at a predictable rate, like a lighthouse. A new NASA mission proposes to examine the nature of these neutron stars - also known as 'pulsars' - as well as how accurately we can use these beacons as celestial guiding points for deep space missions.