Tag Archives: Grace Satellite

Election Security Risks?

Posted on January 20, 2025 by PlatoHagel

Platohagel: If an election were to take place, and computers are used to tabulate votes, could these computers be broke into to increase fake votes for a candidate? It has been with some consternation that security concerns around a voting … Continue reading →

Posted in Agasa, AI, Cerenkov Radiation, Cosmic Rays, Helioseismology, Pierre Auger, planck, Satellites, Space Weather, Time Variable Measure | Tagged , , , | Leave a comment

Justice and Moral Excellence

Posted on January 23, 2024 by PlatoHagel

Socrates: Ah, my dear friend Platohagel, the written word holds great power. Let us weave our dialogues into the fabric of wisdom, capturing the essence of our discussions for those who seek enlightenment. Platohagel: Yes it would be nice to … Continue reading →

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Geodynamics

Posted on January 7, 2017 by PlatoHagel

Mean Gravity Field Image credit: Unless otherwise noted, images are provided by University of Texas Center for Space Research and NASA  On planet Earth, we tend to think of the gravitational effect as being the same no matter where we … Continue reading →

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Evolved Laser Interferometer Space Antenna

Posted on June 8, 2016 by PlatoHagel

View of amplified effects of a + polarized gravitational wave (stylized) on eLISA laser beams / arms paths. Detector noise curves for LISA and eLISA as a function of frequency. They lie in between the bands for ground-based detectors like … Continue reading →

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It’s Final Endgame for GRAIL’s Twin Spacecraft

Posted on December 15, 2012 by PlatoHagel

The mountain where the two spacecraft will make contact is located near a crater named Goldschmidt. Both spacecraft have been flying in formation around the moon since Jan. 1, 2012. They were named by elementary school students in Bozeman, Mont., … Continue reading →

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GRAIL’s Gravity Tour of the Moon

Posted on December 8, 2012 by PlatoHagel

http://www.jpl.nasa.gov/videos/grail/20121205/GRAILtour20121205-640.swfEmbedded video from NASA Jet Propulsion Laboratory California Institute of Technology This movie shows the variations in the lunar gravity field as measured by NASA’s Gravity Recovery and Interior Laboratory (GRAIL) during the primary mapping mission from March to May … Continue reading →

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Gravimetry

Posted on October 25, 2012 by PlatoHagel

Gravity map of the Southern Ocean around the Antarctic continentThis gravity field was computed from sea-surface height measurements collected by the US Navy GEOSAT altimeter between March, 1985, and January, 1990. The high density GEOSAT Geodetic Mission data that lie … Continue reading →

Posted in Grace, Grace Satellite, Graviton, Gravity, Isostasy, Plato's Nightlight Mining Company, Time Variable Measure | Tagged , , , , , , | Leave a comment

Grail At the Moon

Posted on August 28, 2012 by PlatoHagel

 Grail Recovery and Interior Labratory NASA’s Gravity Recovery And Interior Laboratory (GRAIL)-A spacecraft successfully completed its planned main engine burn at 2 p.m. PST (5 p.m. EST) today. As of 3 p.m. PST (6 p.m. EST), GRAIL-A is in a … Continue reading →

Posted in Grace Satellite, LCROSS, LRO, Moon, Moon Base, Plato's Nightlight Mining Company, Satellites, Time Variable Measure | Tagged , , , , , , , , | Leave a comment

Space Geodesy

Posted on July 15, 2012 by PlatoHagel

 Project manager Stephen Merkowitz talks about his work with NASA’s Space Geodesy Project, including a brief overview of the four fundamental techniques of space geodesy: GPS, VLBI, SLR, and DORIS. Learn more about space geodesy at: http://space-geodesy.nasa.gov/ This video is … Continue reading →

Posted in Grace, Grace Satellite, LRO, Moon, VLBI | Tagged , , , , | Leave a comment

Core Optics

Posted on June 26, 2012 by PlatoHagel

A pair of polished Advanced LIGO end mirrors (ETM’s) Core optics are the 40-kg masses that form the heart of a LIGO detector. A core optic is manufactured from fused silica, polished to a few nanometers of smoothness and coated … Continue reading →

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