NASA to Provide Commentary as Grail Moon Mission Ends

MEDIA RELATIONS OFFICE
JET PROPULSION LABORATORY
CALIFORNIA INSTITUTE OF TECHNOLOGY
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
PASADENA, CALIF. 91109 PHONE 818-354-5011
http://www.jpl.nasa.gov

D.C. Agle 818-393-9011
Jet Propulsion Laboratory, Pasadena, Calif.
agle@jpl.nasa.gov

Dwayne Brown 202-358-1726
NASA Headquarters, Washington
dwayne.c.brown@nasa.gov

Sarah McDonnell 617-253-8923
Massachusetts Institute of Technology, Cambridge, Mass.
s_mcd@mit.edu

Advisory: 2012-398b Dec. 14, 2012

NASA to Provide Commentary as Grail Moon Mission Ends

The full version of this story with accompanying images is at:
http://www.jpl.nasa.gov/news/news.php?release=2012-398b&cid=release_2012-398b

PASADENA, Calif. – NASA will provide live commentary of the scheduled lunar surface impacts of
its twin Gravity Recovery and Interior Laboratory (GRAIL) spacecraft 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.

The two probes will hit a mountain near the lunar north pole at approximately 2:28 p.m. PST
Monday, bringing their successful prime and extended science missions to an end.

Commentary will originate from the 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.

Data from the GRAIL twins are allowing scientists to learn about the moon's internal structure and
composition in unprecedented detail. The two probes are being sent purposely into the moon because
they do not have enough altitude or fuel to continue science operations.

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 .

Join the conversation on Twitter by following the hashtag #GRAIL. To learn more about all the ways
to connect and collaborate with NASA, visit: http://www.nasa.gov/connect .

For the mission's press kit and other information about GRAIL, visit: http://www.nasa.gov/grail .
You can follow JPL News on Facebook at: http://www.facebook.com/nasajpl and on Twitter at:
http://www.twitter.com/nasajpl .

-end-


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