Beckett_crater.png (474 × 474像素,文件大小:181 KB,MIME类型:image/png


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English: MESSENGER's Narrow Angle Camera (NAC) on the Mercury Dual Imaging System (MDIS) acquired this view of Mercury’s surface illuminated obliquely from the right by the Sun. The unnamed crater (52 kilometers, or 31 miles, in diameter) in the center of the image displays a telephone-shaped collapse feature on its floor. Such a collapse feature could reflect past volcanic activity at and just below the surface of this particular crater. MESSENGER team members are examining closely the more than 1200 images returned from this flyby for other surface features that can provide clues to the geological history of the innermost planet.

The crater is located in the southern hemisphere of Mercury, on the side that was not viewed by Mariner 10 during any of its three flybys (1974-1975). This scene was imaged while MESSENGER was departing from Mercury from a distance of about 19,300 kilometers (12,000 miles), about 1 hour after the spacecraft's closest encounter with Mercury. The image is of a region approximately 236 kilometers (147 miles) across, and craters as small as 1.6 kilometers (1 mile) can be seen.

Mission Elapsed Time (MET) of image: 108828208

The name of this crater is Beckett, named by the IAU on November 20, 2008.
日期
来源 http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?gallery_id=2&image_id=127
作者 NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

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当前2009年10月2日 (五) 05:202009年10月2日 (五) 05:20版本的缩略图474 × 474(181 KB)Bryan Derksen{{Information |Description={{en|1=MESSENGER's Narrow Angle Camera (NAC) on the Mercury Dual Imaging System (MDIS) acquired this view of Mercury’s surface illuminated obliquely from the right by the Sun. The unnamed crater (52 kilometers, or 31 miles, in

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