File:Uranus, Neptune, and their moons (2MASS).jpg
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| Description | Atlas Images of Uranus, Neptune, and their moons. Uranus and Neptune were observed serendipitously by the 2MASS Southern Facility, during routine operations on 1998 June 7 and June 11 UT, respectively. Both planets appear very blue, i.e., they are not nearly as bright in the Ks band as in the shorter wavelength bands, due to more reflection of sunlight at short wavelengths and to absorption of light by methane gas in their atmospheres. The moons, or satellites, of both planets have icy surfaces with no (or very little) atmospheres. They simply reflect sunlight by various amounts, depending on the albedo, or reflectivity, of each moon's surface. Umbriel has a surprisingly dark, icy surface. Miranda is the innermost and smallest of the five large Uranian moons. Triton is odd, in that it is in a highly-inclined retrograde orbit around Neptune, leading planetary scientists to infer that Triton was captured by Neptune's gravity. For more information about these and other planets, see NASA/JPL's Welcome to the Planets and NASA/GSFC's Planetary Fact Sheets. Moon identification in and further analysis of these 2MASS images by B. Nelson (IPAC). |
| Source | 2MASS Atlas Image Gallery: Solar System Objects |
| Author | Two Micron All Sky Survey (2MASS), a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. |
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This work has been released into the public domain by its copyright holder, Two Micron All Sky Survey (2MASS). This applies worldwide. In some countries this may not be legally possible; if so: Two Micron All Sky Survey (2MASS) grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
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This image is from the Two Micron All Sky Survey (2MASS) project.
At http://www.ipac.caltech.edu/2mass/gallery/aboutimages.html it says:
2MASS kindly requests acknowledgement in one of the following forms, the longer of which is preferred.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 18:53, 14 September 2009 | | 673 × 500 (172 KB) | Karshan (talk | contribs) | {{Information |Description= Atlas Images of '''Uranus''', '''Neptune''', and their moons. Uranus and Neptune were observed serendipitously by the 2MASS Southern Facility, during routine operations on 1998 June 7 and June 11 UT, respectively. Both planets |
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