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The Scientific Context for Exploration of the Moon: Interim Report B Acronyms and Abbreviations ALSEP—the Apollo Lunar Surface Experiments Package ASTP—the Apollo-Soyuz Test Project, a joint U.S.-U.S.S.R. mission ATP—NASA’s Advanced Technology Program Chang’e—a Chinese National Space Administration lunar orbiter CHEX—the NRC’s Committee on the Human Exploration of Space ESMD—NASA’s Exploration Systems Mission Directorate EVA—Extravehicular activity ISRU—in situ resource utilization KREEP—lunar basalts that are rich in potassium, rare-earth elements, and phosphorus LCROSS—the Lunar Crater Observation and Sensing Satellite, a secondary payload to be launched with the Lunar Reconnaissance Orbiter LHB—the Late Heavy Bombardment period, about 3.9 billion years ago LPRP—the Lunar Precursor and Robotic Program of the Exploration Systems Mission Directorate LRO—NASA’s Lunar Reconnaissance Orbiter LSAM—NASA’s Lunar Surface Access Module Lunar A—a Japanese Aerospace Exploration Agency lunar mission M3—Moon Mineralogy Mapper, an imaging spectrometer on the Indian Space Research Organization’s Chandrayaan-1 lunar mission MER—NASA’s Mars Exploration Rover SBE—surface boundary exosphere SELENE—Selenological and Engineering Explorer, a Japanese Aerospace Exploration Agency lunar orbiter SIM—the Apollo Scientific Instrument Module, which contained panoramic and mapping cameras, a gamma-ray spectrometer, a laser altimeter, and a mass spectrometer SMART-1—Small Missions for Advanced Research in Technology, a European Space Agency lunar mission SMD—NASA’s Science Mission Directorate SPA—the lunar South Pole-Aitken basin Vision—NASA’s Vision for Space Exploration
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