File:MESSENGER - NS.jpg
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MESSENGER_-_NS.jpg (357 × 186 pixels, file size: 19 KB, MIME type: image/jpeg)
Summary
"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."
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 14:41, 5 January 2017 | | 357 × 186 (19 KB) | 127.0.0.1 (talk) | "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." |
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