Collisions in space

At 16:55 Greenwich Mean Time on Tuesday, February 10th, two satellites collided. One of them was a communications satellite launched in 1993 by the Russians and which had since died; the other was Iridium 33, one of about seventy communications satellites providing global phone services. They did not collide head-on; they sideswiped each other, so their collision speed was only a fraction of their orbiting velocity. However, since they were orbiting the Earth at about 30,000 km/h, they hit at thousands of kilometres an hour. Both satellites were smashed into fragments.
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