Aerospace extremely hollowness. Nevertheless since the mankind after launching the first satellite, aerospace becomes no longer hollowness, can say jam even. Congested also is not to be us to live the satellite of convenience service, however rubbish, those deserted satellites, rocket, and the litter that launchs them to arise, if the fragment of generation explodes when rocket depart, and the new fragment of the generation after these artificiality collide each other. The source that still has rubbish of a kind of aerospace also nots allow to ignore, that turns over the fragment that satellite of satellitic missile smash produces namely.
Be in at present from the earth 160 kilometers arrive on the orbit of 1609 kilometers, share 4600 deserted satellites and rocket debris, and many 14000 bigger than fist fragment, the aerospace rubbish number with smaller other measures more than 170 million, surround whole world Yan Yan is solidly, down to scientists suspect, still can launch the aerospace on satellite and airship later.
Speed of rubbish of aerospace of close ground orbital amounts to kilometer of every second 7-8, fast track the earth is for instance dormant on orbit also have 3 kilometers / second, and the fragment that mutual collision produces can amount to 10 kilometers even / second, momentum is spectacular, have huge to destroy force. According to computation, a 10 centimeters aerospace rubbish can destroy spacecraft completely, although of millimeter class let spacecraft possibly also discard as useless misfire. If aerospace rubbish stands with manned airship or space barge against, will endanger the life of airship and astronaut, one is called " gravity " the film, descriptive is some country return error of satellitic missile computation, the aerospace fragment chain of generation is bumped, cause monstrous aerospace disaster.
According to the data of Space-Track.org, up to in October 2017, rubbish of aerospace of the traceable on earthly orbit, the amount is maximum is Russia, it is the United States and China next. Russia shares 6500, the United States 6211, china 3839, france 547, japan 266, india has ascended 202 times personally the 6th.
Each country feels anxious to the menace of aerospace rubbish, seeking method to clear these fragments, but current technical level difficulty is heavy, estimation clears the rubbish that rubbish produces can be returned than rubbish itself much. The orbit of aerospace rubbish will be fortunately progressively damply, be in ten years commonly tens of aerosphere burn down can fall inside year, the major aerospace rubbish that arises on the history at present already passed self-destruction of this kind of means. But still 4500 tons of remain are in on orbit, among them one the oldest is the pioneer that the United States launched 1958 a satellite, still move on orbit up to now.
