1959 - Moon - Success - Luna 1Luna 1 was the first spacecraft to reach the Moon and the first of the Luna program of Soviet automatic interplanetary stations successfully launched in the direction of the Moon. While passing through the outer Van Allen radiation belt, the spacecraft's flyby launched, it discovered solar windA solar wind is a stream of particles (mostly high-energy protons ~ 500 keV) which are ejected from the upper atmosphere of a star. In the solar system, the composition of this plasma is identical to the Sun's corona, 73% hydrogen and 25% helium with the
1993 - Success - Launch of the Asca X-ray satellite ( ASTRO-D )
1994 - Moon - Success - Clementine orbiter mapped the surface of the Moon (resolution 125-150m) and allowed the first topographic of the Moon to be generated