Lunar water true, this would indicate that the neutron results from Lunar Prospector were primarily from hydrogen in forms other than ice, such as trapped hydrogen molecules or organics. Nevertheless, the interpretation of the Arecibo data do not exclude the possibility of water ice in permanently shadowed craters. In June 2009, NASA's "Deep Impact" spacecraft, now redesignated EPOXI, made further confirmatory bound hydrogen measurements during another lunar flyby. As part of its lunar mapping programme, Japan's Kaguya probe, launched in September 2007 for a 19-month mission, carried out gamma ray spectrometry observations from orbit that can measure the abundances of various elements
Explorer 47 Explorer 47 Explorer 47, also known IMP-7 and Interplanetary Monitoring Platform IMP-H, was an American satellite launched as part of Explorers program. Explorer 47 as launched on 23 September 1972 on Cape Canaveral, Florida, U.S., with an Delta rocket. Explorer 47 was the seventh satellite of the Interplanetary Monitoring Platform. Explorer 47 continued the study begun by earlier IMP spacecraft of the interplanetary and magnetotail regions from a nearly circular orbit, near 37 earth radii. This 16 sided drum-shaped spacecraft was high and in diameter. It was designed to measure energetic particles, plasma and electric and magnetic fields. The spin