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LAMP Observes GRAIL Impact

The Gravity Recovery and Interior Laboratory (GRAIL) mission comprised a pair of satellites that together measured the gravity field of the Moon. GRAIL ended its mission with a planned impact into the side of a lunar mountain on December 17, 2012. Lunar Reconnaissance Orbiter (LRO) maneuvered into an orbit that would allow it to observe the impact. One of LRO's instruments, the Lyman-Alpha Mapping Project (LAMP), looked for the chemical signatures of a number of elements, including hydrogen and mercury, in the dust plume kicked up by the impact.

This animation shows the relative positions of GRAIL and LRO at the time of the impact, as well as the view from LAMP as it scanned for the dust plume. The LAMP sensor is a 6.0° x 0.3° slit that was positioned to look over the limb of the Moon, so that it would be pointed into the tenuous dust plume with only the sky in the background. This observation was possible, in part, because GRAIL impacted on the night side of the Moon, where there was no concern that LAMP's sensitive detector could be blinded by sunlit terrain. From Earth, the Moon was a waxing crescent at the time of the impact.
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Other multimedia items related to this story:
     LAMP Observes the LCROSS Impact (id 3785)
     GRAIL Impacts the Moon (id 4023)

LRO flies over the north pole of the Moon, where it has a very good view of the GRAIL impact. The second part is the view from LRO through LAMP's slit, showing the impact and the resulting plume. The orbits, impact locations, terrain, LAMP field of view, and starfield are accurately rendered.    LRO flies over the north pole of the Moon, where it has a very good view of the GRAIL impact. The second part is the view from LRO through LAMP's slit, showing the impact and the resulting plume. The orbits, impact locations, terrain, LAMP field of view, and starfield are accurately rendered.
Duration: 30.0 seconds
Available formats:
  1920x1080 QT         32 MB
  1920x1080 MPEG-4   11 MB
  1280x720   QT         17 MB
  1280x720   MPEG-4   5 MB
  640x360     QT         5 MB
  640x360     MPEG-4   1 MB
  1920x1080 Frames (Comp)
  1920x1080 JPEG         366 KB
  320x180     PNG           68 KB
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This is the raw footage of the previous entry. It lacks the clock, slit, and starfield. Includes an alpha channel.    This is the raw footage of the previous entry. It lacks the clock, slit, and starfield. Includes an alpha channel.

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The starfield frames. LAMP was looking in the direction of the constellation Orion at the time of the GRAIL impact.    The starfield frames. LAMP was looking in the direction of the constellation Orion at the time of the GRAIL impact.

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Short URL to This Page:http://svs.gsfc.nasa.gov/goto?4054
Animation Number:4054
Completed:2013-03-15
Animator:Ernie Wright (USRA) (Lead)
Producer:Dan Gallagher (USRA)
Scientists:John Keller (NASA/GSFC)
 Kurt Retherford (SwRI)
Platforms/Sensors/Data Sets:U.S. Naval Observatory/Third CCD Astrograph/Catalog
 LRO/LOLA/Digital Elevation Map
 SPICE Ephemerides
Series:The Moon
 LRO - Animations
Please give credit for this item to:
NASA's Goddard Space Flight Center Scientific Visualization Studio
 
Keywords:
SVS >> Elevation data
SVS >> Gravity
SVS >> HDTV
SVS >> Laser Altimeter
SVS >> Lunar
SVS >> Moon
SVS >> LRO
SVS >> Lunar Reconnaissance Orbiter
SVS >> LOLA
SVS >> LAMP
SVS >> Lunar Topography
SVS >> Lunar Elevation Map
SVS >> Solar System >> Moon >> Lunar Surface
SVS >> GRAIL
SVS >> Gravity Recovery and Interior Laboratory
 
 


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Many of our multimedia items use the GCMD keywords. These keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0

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