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Post Info TOPIC: Gravity Recovery and Interior Laboratory mission
Blobrana


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RE: Gravity Recovery and Interior Laboratory mission
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NASA Probes Prepare for Mission-Ending Moon Impact

  • Last Flight for GRAIL's Twin Spacecraft
  • GRAIL's Final Resting Spot
  • Moon Gravity Field Using Prospector Data
  • GRAIL's Gravity Field of the Moon
  • GRAIL's Gravity Map of the Moon
  • Lunar Heritage Sites and GRAIL's Final Mile
 
 

Twin lunar-orbiting NASA spacecraft that have allowed scientists to learn more about the internal structure and composition of the moon are being prepared for their controlled descent and impact on a mountain near the moon's north pole at about 22:28 UT, Monday, Dec. 17. 

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Blobrana


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NASA to Host Dec. 13 Telecon on Twin Probes' Mission-Ending Moon Impact

NASA will host a media teleconference at 18:30 UT Thursday, Dec. 13, to provide an overview of events leading up to twin spacecraft being commanded to impact the moon's surface on Dec. 17 at approximately 22:28 UT.
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Blobrana


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GRAIL mission
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NASA Twin Spacecraft Create Most Accurate Gravity Map of Moon

Twin NASA probes orbiting the moon have generated the highest resolution gravity field map of any celestial body.
The new map, created by the Gravity Recovery and Interior Laboratory (GRAIL) mission, is allowing scientists to learn about the moon's internal structure and composition in unprecedented detail. Data from the two washing machine-sized spacecraft also will provide a better understanding of how Earth and other rocky planets in the solar system formed and evolved.
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Blobrana


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Tandem Satellite Mission Reveals a Thinner Lunar Crust

A sneak peek at the first results from a NASA mission to measure the Moon's gravitational field hints at a lunar crust that is only half as thick as once thought.
There were a few gasps among scientists in the audience at a 13 September seminar at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts, as they took in the data revealed by Maria Zuber, principal investigator for NASA's Gravity Recovery and Interior Laboratory (GRAIL) mission. Zuber, a planetary scientist at the Massachusetts Institute of Technology in Cambridge, showed a crisp, high-resolution gravitational map made with data collected by GRAIL's twin spacecraft between March and June of this year.
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Blobrana


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The Gravity Recovery and Interior Laboratory (GRAIL) was launched from the Cape Canaveral Air Force Station on the 10th September, 2011.

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Blobrana


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NASA's GRAIL Moon Twins Begin Extended Mission Science

NASA's twin, lunar-orbiting Gravity Recovery and Interior Laboratory (GRAIL) spacecraft began data collection for the start of the mission's extended operations.
At 16:28 UT yesterday, while the two spacecraft were 30 kilometres above the moon's Ocean of Storms, the Lunar Gravity Ranging System -- the mission's sole science instrument aboard both GRAIL twins -- was powered up.
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Blobrana


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 NASA Lunar Spacecraft Complete Prime Mission Ahead of Schedule

A NASA mission to study the moon from crust to core has completed its prime mission earlier than expected. The team of NASA's Gravity Recovery and Interior Laboratory (GRAIL) mission, with twin probes named Ebb and Flow, is now preparing for extended science operations starting Aug. 30 and continuing through Dec. 3, 2012.
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Blobrana


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Flying Formation - Around the Moon at 5,800 kilometres per hour

As the GRAIL twins fly over areas of greater and lesser gravity at 5,800 kilometres per hour, surface features such as mountains and craters, and masses hidden beneath the lunar surface, can influence the distance between the two spacecraft ever so slightly.
How slight a distance change can be measured by the science instrument beaming invisible microwaves back and forth between Ebb and Flow?
How about one-tenth of one micron? Another way to put it is that the GRAIL twins can detect a change in their position down to one half of a human hair (or 0.00001 centimetres).
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Blobrana


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NASA GRAIL Returns First Student-Selected Moon Images

One of two NASA spacecraft orbiting the moon has beamed back the first student-requested pictures of the lunar surface from its onboard camera. Fourth grade students from the Emily Dickinson Elementary School in Bozeman, Mont., received the honour of making the first image selections by winning a nationwide competition to rename the two spacecraft.
The image was taken by the MoonKam, or Moon Knowledge Acquired by Middle school students. Previously named Gravity Recovery And Interior Laboratory (GRAIL) A and B, the twin spacecraft are now called Ebb and Flow. Both washing-machine-sized orbiters carry a small MoonKAM camera. Over 60 student-requested images were taken by the Ebb spacecraft from March 15-17 and downlinked to Earth March 20.
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Blobrana


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NASA's Twin GRAIL Spacecraft Begin Collecting Lunar Data

NASA's Gravity Recovery And Interior Laboratory (GRAIL) spacecraft orbiting the moon officially have begun their science collection phase. During the next 84 days, scientists will obtain a high-resolution map of the lunar gravitational field to learn about the moon's internal structure and composition in unprecedented detail. The data also will provide a better understanding of how Earth and other rocky planets in the solar system formed and evolved.
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