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 15 between the spin axis and the sun direction to about 3° intervals. During launch the spacecraft failed to despin. The spin rate ranged from 72.9 to 73.2 rpm during the life of the spacecraft. The spin axis pointed at right ascension 80.97° and declination 20.9°. Explorer 15 Explorer 15, also called EPE-C, was an American satellite launched as part of Explorers program. Explorer 15 as launched on October 27, on Cape Canaveral Air Force Station, Florida, United States, with Delta rocket. Explorer 15 was a spin-stabilized, solar-cell powered spacecraft instrumented to study the artificial radiation belt produced by the Starfish