Chang'e 1 is our first  mission to the Moon. It was developed by China Academy of Space Technology. The spacecraft launched on 24 October 2007 at 10:05 UT (18:05 Chinese Standard Time, 6:05 a.m. EDT) on a CZ-3A (Long March 3A) booster from Xichang Satellite Launch Center. The satellite was deployed into a 205 x 51000 km Earth orbit from the boosters upper stage at 10:29 UT. It will go into a trajectory towards the Moon on 31 October and go into lunar orbit on 5 November. Chang'e 1 will orbit the Moon for a year in a 200 km altitude circular orbit to test the technology for future missions and to study the lunar environment and surface regolith. The primary engineering objectives of the mission are to validate the technology necessary to fly lunar missions. The primary science objectives are to obtain three-dimensional stereo images of the lunar surface, determine the distribution of some useful elements on the surface and estimate their abundance, survey the thickness of lunar soil and to evaluate helium-3 resources, and to explore the environment between the Moon and Earth.