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threatened by space junk, the ISS changes course
That garbage is not only a problem on earth. The warning also applies to waste space. Waste expelled from the engines of rockets, satellites, fragments, paint chips and dust, the remains of the old missions of man, floating around the earth in large quantities threaten astronauts and spacecraft. Just today, the station ISS orbit has been forced to change course to avoid collision with some waste, announced today the Russian mission control center decided that an urgent change of course. At 14:25 Moscow time (12:25 to Italian), spokesman of the Russian control center, Valery Lyndin, the engines were started for 180 seconds, to increase speed and avoid the danger, was 700 meters .
The team of the International Space Station had been put on alert already March 13, 2009, due to risk collision with a piece of orbital debris. The first and greatest creation of space debris caused by a collision took place February 10, 2009 at 16:56 UTC. The Cosmos 2251 satellite idle and operating satellite Iridium 33 collided at 789 km altitude above the northern Siberia. The speed on impact was about 11.7 kilometers per second, roughly 42,120 kilometers per hour. The satellites were destroyed and the collision has produced an enormous amount of debris that have been added to those already existing.
The exact number of WASTE in orbit is not known, but the U.S. Strategic Command is currently in possession of a catalog containing about 13 thousand objects, in part, to avoid misinterpretation as hostile missiles. The observation of the data collected is kept updated through a series of radar and ground-based telescopes and by space telescopes. However, most of the debris remain unnoticed. According to the ESA Meteoroid and Space Debris Terrestrial Environment Reference, Master Model-2005, there are more than 600 thousand objects larger than 1 cm in orbit, but for many experts the number is rounded down.
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