Image:Daniel Kirkwood.jpg
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This image is in the public domain because its copyright has expired in the United States and those countries with a copyright term of no more than the life of the author plus 100 years. |
This is a photo of American astronomer Daniel Kirkwood (1814-1895), who identified and explained the "Kirkwood Gaps" in the main asteroid belt between the orbits of Mars and Jupiter and who explained that Cassini's Division and Encke's Division in the rings of Saturn are caused by the gravitational effects of Saturn's moons.
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This file is an exact duplicate of another file from the Wikimedia Commons. Unless it is currently protected from editing, this media file may qualify for speedy deletion if it satisfies these conditions. |  |
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 00:23, 10 November 2004 | 99×138 (6 KB) | Cuppysfriend (Talk | contribs) | ({{PD-old}}) |
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