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Old Basin Filled by Smooth Plains

Aug. 5, 2000
This image, from NASA's Mariner 10 spacecraft which launched in 1974, shows an old basin's hummocky rim is partly degraded and cratered by later events.

Old basin, 190 km in diameter, filled by smooth plains at 43 degrees S, 55 degrees W. The basin's hummocky rim is partly degraded and cratered by later events. Mariner 10 frame 166607.

The Mariner 10 mission, managed by the Jet Propulsion Laboratory for NASA's Office of Space Science, explored Venus in February 1974 on the way to three encounters with Mercury-in March and September 1974 and in March 1975. The spacecraft took more than 7,000 photos of Mercury, Venus, the Earth and the Moon.

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