File:MESSENGER - NS.jpg

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MESSENGER_-_NS.jpg (357 × 186 pixels, file size: 19 KB, MIME type: image/jpeg)

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Description
English: "NS maps variations in the fast, thermal, and epithermal neutrons Mercury’s surface emits when struck by cosmic rays. “Fast” neutrons shoot directly into space; others collide with neighboring atoms in the crust before escaping. If a neutron collides with a light atom (like hydrogen), it will lose energy and be detected as a slow (or thermal) neutron. Scientists can look at the ratio of thermal to epithermal (slightly faster) neutrons across Mercury’s surface to estimate the amount of hydrogen – possibly locked up in water molecules – and other elements."
Source http://messenger.jhuapl.edu/instruments/GRNS.html
Author NASA / JHU/APL

Licensing

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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current22:35, 25 January 2011Thumbnail for version as of 22:35, 25 January 2011357 × 186 (19 KB)Xession (talk | contribs){{Information |Description ={{en|1="NS maps variations in the fast, thermal, and epithermal neutrons Mercury’s surface emits when struck by cosmic rays. “Fast” neutrons shoot directly into space; others collide with neighboring atoms in the crust

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