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Recent Articles
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Topic: Gravity Recovery and Interior Laboratory Spacecraft
In 2011, scientists at NASA’s Jet Propulsion Laboratory in Pasadena, CA, and the University of Colorado at Boulder reported that between early 2010 and summer 2011, global sea level fell sharply, by about a quarter of an inch, or half a centimeter. ![]() Changes in Australia’s mass as reported by data from NASA’s Gravity Recovery and Climate Experiment (GRACE) satellites from June 2010 to February 2011. Areas in greens and blues depict the greatest increases in mass, caused by excessive precipitation. The contour lines represent various land surface elevations. (Credit: NCAR/NASA/JPL-Caltech) «Read the rest of this article» Sections: Technology | No Comments
NASA’s GRAIL Twin Spacecraft data shows origin of Surface Gravity on Earth’s Moon
Because of GRAIL’s findings, future spacecraft on missions to other celestial bodies can navigate with greater precision. ![]() Using a precision formation-flying technique, the twin GRAIL spacecraft mapped the moon’s gravity field, as depicted in this artist’s rendering. (Image credit: NASA/JPL-Caltech) «Read the rest of this article» Sections: Technology | No Comments
NASA’s GRAIL probes create high resolution gravity field map of the MoonWritten by DC Agle
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. «Read the rest of this article» Sections: Technology | No Comments
NASA’s GRAIL Spacecraft fly in Formation around the Moon at 3,600 MPHWritten by DC Agle
![]() An artist's depiction of the GRAIL twins (Ebb and Flow) in lunar orbit. During GRAIL's prime mission science phase, the two spacecraft will orbit the moon as high as 31 miles (51 kilometers) and as low as 10 miles (16 kilometers). (Image credit: NASA/Caltech-JPL/MIT) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Twin GRAIL Spacecraft Begin Collecting Lunar DataWritten by DC Agle
![]() Using a precision formation-flying technique, the twin GRAIL spacecraft will map the moon's gravity field, as depicted in this artist's rendering. (Image credit: NASA/JPL-Caltech) «Read the rest of this article» Sections: Technology | No Comments
NASA’s GRAIL Mission Returns First Video From Moon’s Far SideWritten by DC Agle
GRAIL consists of two identical spacecraft, recently named Ebb and Flow, each of which is equipped with a MoonKAM. The images were taken as part of a test of Ebb’s MoonKAM on January 19th. The GRAIL project plans to test the MoonKAM aboard Flow at a later date. ![]() South pole of the far side of the moon as seen from the GRAIL mission's Ebb spacecraft. (Image credit: NASA/Caltech-JPL) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Twin Grail Spacecraft Reunite in Lunar OrbitWritten by DC Agle
“NASA greets the new year with a new mission of exploration,” said NASA Administrator Charles Bolden. “The twin GRAIL spacecraft will vastly expand our knowledge of our moon and the evolution of our own planet. We begin this year reminding people around the world that NASA does big, bold things in order to reach for new heights and reveal the unknown.” ![]() Artist concept of GRAIL-B performing its lunar orbit insertion burn. (Image credit: NASA/JPL-Caltech) «Read the rest of this article» Sections: Technology | No Comments
First of NASA’s GRAIL Spacecraft Enters Moon OrbitWritten by DC Agle
NASA’s Gravity Recovery And Interior Laboratory (GRAIL)-A spacecraft successfully completed its planned main engine burn at 2:00pm PST (5:00pm EST) today. As of 3:00pm PST (6:00pm EST), GRAIL-A is in an orbit of 56 miles by 5,197 miles (90 kilometers by 8,363 kilometers) around the moon that takes approximately 11.5 hours to complete. «Read the rest of this article» Sections: Technology | No Comments
NASA’s GRAIL-A Spacecraft 24 Hours Away From MoonWritten by DC Agle
Launched aboard the same rocket on September 10th, 2011, GRAIL-A’s mirror twin, GRAIL-B, is also closing the gap between itself and the moon. GRAIL-B is scheduled to perform its lunar orbit insertion burn on New Year’s Day (January 1st) at 2:05pm PST (5:05pm EST). ![]() Artist concept of GRAIL mission. GRAIL will fly twin spacecraft in tandem orbits around the moon to measure its gravity field in unprecedented detail. (Image credit: NASA/JPL) «Read the rest of this article» Sections: Technology | No Comments
NASA Twin Spacecraft On Final Approach For Moon OrbitWritten by DC Agle Named Gravity Recovery And Interior Laboratory (GRAIL), the spacecraft are scheduled to be placed in orbit beginning at 1:21pm PST (4:21pm EST) for GRAIL-A on December 31st, and 2:05pm PST (5:05pm EST) on January 1st for GRAIL-B. “Our team may not get to partake in a traditional New Year’s celebration, but I expect seeing our two spacecraft safely in lunar orbit should give us all the excitement and feeling of euphoria anyone in this line of work would ever need,” said David Lehman, project manager for GRAIL at NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, CA. ![]() Artist concept of GRAIL mission. GRAIL will fly twin spacecraft in tandem orbits around the moon to measure its gravity field in unprecedented detail. (Image credit: NASA/JPL) «Read the rest of this article» Sections: Technology | No Comments
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