End of Mission: GRAIL Spacecraft Impact a Mountain on the Moon
The planned path of the GRAIL spacecrafts’ final orbit. Credit: NASA
“So long, Ebb and Flow, and we thank you,” said GRAIL project manager David Lehman of NASA’s Jet Propulsion Laboratory after the twin GRAIL spacecraft completed a planned formation-flying double impact into the southern face of 2.5-kilometer- (1.5-mile-) tall mountain on a crater rim near the Moon’s north pole. Mission team members estimate the two spacecraft were traveling at a speed of 1.7 kilometers per second (3,760 mph), and likely broke apart on impact. NASA said that most of what remains of the washing machine-sized spacecraft are probably buried in shallow craters, and the size of those craters will hopefully be determined when NASA’s Lunar Reconnaissance Orbiter is able to image the impact site in about two weeks.
NASA has honored the GRAIL team’s request to name Ebb and Flow’s impact sites after astronaut Sally Ride, who passed away earlier this year. She was America’s first woman in space and a member of the GRAIL mission team.
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© nancy for Universe Today, 2012. | Permalink | One comment |
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2012-12-18 00:42:06
Source: http://www.universetoday.com/99035/end-of-mission-grail-spacecraft-impact-a-mountain-on-the-moon/
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