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of rock. 12 km diameter, Gaspra shows that they are in fact complex geological world in their own right with very irregular shapes and abundant geological features. The Stoney asteroids irregular shape, sharp edges and plentiful grooves. Not probably evidence of fractures. I suggested it was the product of one or more collisions. It also had a striking abundance of small craters, much greater than on other bodies and also showed evidence of land flight. Despite Gaspra's extremely low gravity, the historic asteroids turned out to be much more dynamic. I think anyone had previously imagined. Galileo went on to this. This is a second asteroid, it's high down in 1993, where it made it to the discovery.