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Tuesday, Oct 21, 2014


NASA GRAIL Twins Complete Their Moon Impact

Update: Engineers at NASA's Jet Propulsion Laboratory in Pasadena, Calif., have received confirmation that the twin GRAIL spacecraft have, as planned, completed their impact into the moon.

Update: The twin spacecraft of NASA’s GRAIL mission have completed their final rocket burns. Their pre-planned lunar impact is expected at about 2:28 p.m. PST (5:28 EST).


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Ebb and Flow -- the two twin spacecraft of NASA's Gravity Recovery and Interior Laboratory (GRAIL) mission -- have begun their final rocket burns. They are scheduled to impact the moon at around 2:28 p.m. PST (5:28 EST).

NASA is providing live commentary of the pre-planned lunar surface impacts by GRAIL beginning at 2 p.m. PST (5 p.m. EST) Monday, Dec. 17. The event will be broadcast on NASA Television and streamed on the agency's website. For NASA TV streaming video, schedule and downlink information, visit: http://www.nasa.gov/ntv . The coverage will also be streamed live on Ustream at: http://www.ustream.tv/nasajpl2 .

The two probes will hit a mountain near the lunar north pole, bringing their successful prime and extended science missions to an end. The two probes are being sent purposely into the moon because they no longer have enough altitude or fuel to continue science operations. 



Commentary will originate from the GRAIL control room at NASA's Jet Propulsion Laboratory in Pasadena, Calif. Coverage will last about 35 minutes and include live interviews with GRAIL team members.

GRAIL's final resting place on the moon will be in shadow at the time of impact, so no video documentation of the impacts is expected. GRAIL data are allowing scientists to learn about the moon's internal structure and composition in unprecedented detail.

Source : NASA

Published on ASDNews: Dec 18, 2012

 

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