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Fast Things in the Solar System
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Trying to get a sense of scale in the Solar System can be difficult, because the distances involved are outside the realm of ordinary experience. Planets and other bodies also move at much greater speeds than ordinary household objects. For example, 1 km/sec is pretty fast for a bullet, but slow compared to any of the planets. It would take you a very long time to get anywhere in the Solar System, moving at that speed. In order to get a sense of the speeds of things, let’s start with some f...