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NASA's second moon probe reaches lunar orbit

NewsCentral Staff

Story Created: Jan 1, 2012 at 7:20 PM EDT

Story Updated: Jan 1, 2012 at 7:20 PM EDT

The second of two new research probes successfully entered the moon's orbit Sunday afternoon, a day after its companion, NASA announced.

(CNN) -- The second of two new research probes successfully entered the moon's orbit Sunday afternoon, a day after its companion, NASA announced.

The unmanned Gravity Recovery and Interior Laboratory-B (GRAIL-B) fired its main engines at 5:05 p.m. and slipped into lunar orbit 39 minutes later, controllers at the space agency's Jet Propulsion Laboratory reported. Its companion GRAIL-A probe arrived on Saturday.

"Cheers in JPL mission control as everything is looking good for #GRAIL-B," the Pasadena, California, laboratory announced on its Twitter page. "It's going to be a great 2012!"
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