The National Aeronautics and Space Administration (NASA) intentionally programmed their twin spacecraft named Grail to crash into the lunar surface. Material ejected in the moon. Including geological structures called "mascon" or "mass concentrations." The mass concentrations are highly dense and can draw from the spacecraft orbit around the moon moment. The data that helped astronomers solve the mystery of gravity on the moon.
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| Artist concept of GRAIL mission. Grail will fly twin spacecraft in tandem orbits around the moon to measure its gravity field in unprecedented detail. (Picture from: http://www.jpl.nasa.gov/) |
Understandably mascon, which was first discovered in the 1960s by NASA, has not been known. "When the gravity anomaly is unknown," said geophysicist at Purdue University in West Lafayette, Jaid Melosh. His study of the moon's gravitational published in a scientific journal on May 30, 2013.
By mapping the area of gravity on the moon, plane Grail can find mascon and gravity anomalies on the moon as well as provide an overview of the structure of the moon. This allows the scientists studied two adjacent basins and far apart. The way it used to determine the formation process mascon.
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| These maps of the moon show gravity anomalies measured by NASA’s GRAIL mission. (Picture from: http://2eyeswatching.com/) |
Apparently, a giant asteroid that crashed into the moon billions of years ago has left a crater deep enough to coat. Things could not dJjelaskan until now is how much solid material impact on the moon and how the moon gravity in the basin is not balanced. "Initially researching mascon an easy solution," said one of the authors in this study, Jeff Andrews-Hanna, who is also an assistant professor of geophysics at the Colorado School of Mines. He said mascon basin adjacent to the month, separately contains solid lava that seems able to measure the excess mass and positive gravity anomalies.
Ancient asteroid that crashed into the moon causing the material melts and rocks on the moon. "Hot material then cools, be strong, and formed a thick coat on the surface of the moon," said Melosh. Then form a crust in the curve at the top of the basin.
Professor at the Department of Geology in University of Maryland, Laurent Montesi, said the study produced a dynamic evolution of the moon. "What's interesting about this research is that we can see and examine the condition of the real moon mascon formation." *** [EKA | FROM VARIOUS SOURCES | LIVESCIENCE | JET PROPULSION LABORATORY | SATWIKA MOVEMENTI | KORAN TEMPO 4248]
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