North wall of Urvara Crater

North wall of Urvara Crater
North wall of Urvara Crater Dawn observed this section of Urvara Crater's north wall on July 16, the 272nd birthday of Giuseppe Piazzi, who discovered Ceres in 1801. The spacecraft was 33 miles (54 kilometers) high and 7.5 million times closer to Ceres than Piazzi had been. This scene, which is 3.2 miles (5.2 kilometers) wide, is above the large crater inside Urvara in the picture we saw in November 2015. In addition to the very large segment of Urvara's wall that has detached here, you can see boulders that have slid part of the way down the wall as well as trails left by boulders that fell farther, out of the picture. We have seen all or part of the 106-mile (170-kilometer) Urvara Crater many times, including a site last month very close to this one, slightly east (and slightly lower), where boulders were visible at the end of their trails at the bottom of the wall. Full image and caption. NASA / JPL-Caltech / UCLA / MPS / DLR / IDA

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