The first of two NASA spacecraft to study the moon in unprecedented detail has entered lunar orbit. A spacecraft successfully completed its planned main engine burn at 2 p.m. PST Saturday, according to NASA's Gravity Recovery And Interior Laboratory (GRAIL). The spacecraft are on a mission to map lunar gravity in unprecedented detail, shedding light on the moon's composition, formation and evolution. Scientists will use the twin probes' measurements to construct extremely accurate maps of the lunar gravity field. These maps, in turn, should reveal the moon's structure in great detail, allowing scientists to draw insights about how the rocky body formed and how it has changed over time.
Original URL: https://www.foxnews.com/science/nasa-marks-2012-with-twin-probes-in-moon-orbit
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