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发帖数: 1994 | 1 Candor and Ophir Chasmata
Credit: Viking Project, NASA
Explanation: First imaged by the Mariner 9 spacecraft, Valles Marineris, the grand canyon of
Mars, is a system of enormous depressions called chasmata that stretch some 4,000
kilometers along the Martian equator. Looking north over the canyon's central regions,
Candor chasma lies in the foreground of this spectacular view with the steep walls of Ophir
chasma near the top. Surface collapse and landslides are seen to be pa |
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