File:A Patch of Black On Mercury.jpg
本预览的尺寸：596 × 600像素。 其他分辨率：239 × 240像素 | 477 × 480像素 | 1,018 × 1,024像素。
原始文件 （1,018 × 1,024像素，文件大小：137 KB，MIME类型：image/jpeg）
摘要
| 描述 |
English: The crater in the lower right-hand corner of this image has a patch of very dark material located near its centre. The region of this image has been seen only with the Sun high overhead in the sky. Such lighting conditions are good for recognizing colour differences of rocks but not well suited for ascertaining the topography of surface features from shadows. The shape of the surface in this area is difficult to resolve given the lighting angle, but the dark patch is not in shadow. The dark colour is likely due to rocks that have a different mineralogical composition from that of the surrounding surface.
Image Mission Elapsed Time (MET): 131771988 Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS) Resolution: 260 meters/pixel Scale: This image is about 270 kilometres across Spacecraft Altitude: 10,100 kilometres |
| 日期 | |
| 来源 | NASA Jet Propulsion Laboratory Photojournal |
| 作者 | NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington |
| 其他版本 | File:Hemingway crater.png |
许可协议
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本文件完全由NASA创作，在美国属于公有领域。根据NASA的版权方针，NASA的材料除非另有声明否则不受版权保护。（参见Template:PD-USGov/zh、NASA版权方针页面或JPL图片使用方针。） |  |
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|---|---|---|---|---|---|
| 当前 | 2009年7月6日 (一) 18:30 | | 1,018 × 1,024（137 KB） | Originalwana | {{Information |Description={{en|1=The crater in the lower right-hand corner of this image has a patch of very dark material located near its centre. The region of this image has been seen only with the Sun high overhead in the sky. Such lighting condition |
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