SELENE SELENE SELENE (; Selenological and Engineering Explorer), better known in Japan by its nickname , was the second Japanese lunar orbiter spacecraft following the Hiten probe. Produced by the Institute of Space and Astronautical Science (ISAS) and the National Space Development Agency (NASDA), the spacecraft was launched on September 14, 2007. After successfully orbiting the Moon for a year and eight months, the main orbiter was instructed to impact on the lunar surface near the crater Gill on June 10, 2009. The orbiter's nickname, Kaguya, was selected by the general public. It comes from the name of a lunar princess
Explorer 38 Explorer 38 Explorer 38 (also called as Radio Astronomy Explorer A, RAE-A and RAE-1) was the first satellite to study radioastronomy. Explorer 38 was launched as part of the Explorers program, being the first of the 2 satellites RAE. Explorer 38 was launched on 4 July 1968 from Vandenberg Air Force Base, California, United States, with an Delta J rocket. Explorer 38 measured the intensity of celestial radio sources, particularly the Sun, as a function of time, direction and frequency (0.2 MHz to 20 MHz). The spacecraft was gravity gradient oriented. The spacecraft weight was , and average power consumption