The GRAIl satellites, refereed to, affectionately as Ebb and Flow, entered service in late 2011 early 2012 produced highly detailed gravity maps that shows a scarred surface rivaled only by an even more battered interior. The Moon's crust is thinner than expected and that it is shot through with lava-filled cracks evidence that the Moon expanded early in it's history.
NASA has for a year had a pair of satellites orbiting the Moon. NASA's Gravity
Recovery and Interior Laboratory (GRAIL) enabling scientists to make detailed gravity maps that aided researchers to better understand the sub-surface lunar makeup.
On December 17 the Grail probes were instructed to impact a mountain at the northern pole, which the did within 20 seconds of each other at 5:28 p.m. EST.
Wikipedia GRAIL link HERE
1 comment:
I wish we would have had something up there to video it. I would have loved to see the crash itself.
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