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31. Gaspra Asteroid Belt
31. Gaspra Asteroid Belt

The asteroid Gaspra is 9 × 18 kilometers across. It has an angular shape and may be a fragment produced by the impact disruption of a larger parent asteroid. Gaspra is one of well over 4000 rocky asteroids, most of which orbit between Mars and Jupiter. They range in size from 900 kilometers (Ceres) to “rocks” less than 1 kilometer across, and are either the shattered remains of a planet or pieces of a planets that never formed. Galileo obtained these views of Gaspra in 1991 from a distance of about 20,000 kilometers and a resolution of roughly 200 meters.

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