Of all these bodies, the Moon now has the best-known gravity field, thanks to the Gravity Recovery and Interior Laboratory (GRAIL) mission, the first dedicated gravity planetary mission.. Because of the tidal lock of the Moon, it is not possible to directly track spacecraft … NASA's twin GRAIL (Gravity Recovery and Interior Laboratory) spacecraft went out in a blaze of glory on Dec. 17, 2012, when they were intentionally crashed into a … ... and the results are what you see today. 6.69 MB. video/mp4. Parting Moon Shots from NASA's GRAIL Mission. ... NASA to Announce New Science Results About Moon Click for more This video of the moon was taken by the NASA GRAIL mission's MoonKAM (Moon Knowledge Acquired by Middle School Students) camera aboard the Ebb spacecraft on Dec. 14, 2012. New GRAIL model and a look at crustal density Sander Goossens. Many spacecraft just fade away, drifting silently through space after their mission is over, but not GRAIL. The Gravity Recovery and Interior Laboratory (GRAIL) mission ended on 17 December 2012 when the two spacecraft GRAIL A (Ebb) and GRAIL B (Flow) impacted the Moon. INTRODUCTION The GRAIL project was a NASA Discovery Program mission consisting of two spacecraft developed and operated by the Lockheed Martin Space Systems Company. The two satellites, named > Ebb and Flow, used radio signals to precisely measure their separation as they flew in formation, one following the other in the same nearly circular polar orbit. The GRAIL Discovery mission to measure the gravity field of the Moon has provided new insights into the structure and evolution of the Moon as a result of the quality of the measurements and the very low altitude from which the measurements were obtained. GRAIL's map of the lunar Bouguer gravity anomaly These maps of the moon show the "Bouguer" gravity anomalies as measured by NASA's GRAIL mission. We present updated models of the lunar gravity field using data from the Gravity Recovery and Interior Laboratory (GRAIL) mission (Zuber et al., 2013).These models are expressed in spherical harmonics of degree and order 1200 (an effective resolution at the equator of 4.5 km by 4.5 km). This graphic highlights locations on the moon NASA considers "lunar heritage sites" and the path NASA's Gravity Recovery and Interior Laboratory spacecraft will take on their final flight. GRAIL Impact Sites In October 1959, the Soviet Union's Luna 3 spacecraft took the first photo of the farside of the Moon - a region never before seen by human eyes. The GRAIL mission is managed by JPL for NASA’s Science Mission Directorate in Washington. Download. The Gravity Recovery and Interior Laboratory ( GRAIL ) mission comprises a pair of satellites launched in September, 2011 and placed in orbit around the Moon in January, 2012. NASA GRAIL Spacecraft Formation Flight, End of Mission Results, and Small Satellite Applications Christine Edwards-Stewart Lockheed Martin Space Systems Company . Follow ZME on social media. 2 GRAIL Discovery Introduction • Overview of Gravity Recovery and Interior Laboratory (GRAIL) mission • GRAIL design evolution from small-satellite technology ADVERTISEMENT. implemented on the GRAIL spacecraft will be accompanied by a presentation of flight results and discussion of small-satellite applications. This map shows the gravity field of the moon as measured by NASA’s GRAIL mission. Image credit: NASA/ARC/MIT The first science results from NASA’s twin GRAIL …

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