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57. || Comets move around the sun in very elliptical orbits. At its closet approach, in 1986, Comet Halley was 8.79 X 107 km from

57. || Comets move around the sun in very elliptical orbits. At its closet approach, in 1986, Comet Halley was 8.79 X 107 km from the sun and moving with a speed of 54.6 km/s. What was the comet's speed when it crossed Neptune's orbit in 2006

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