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Summary
True-color image of Triton by Voyager 2
Original Caption
On October 10th, 1846, William Lassell was observing the newly discovered planet Neptune. He was attempting to confirm his observation, made just the previous week, that Neptune had a ring. But this time he discovered that Neptune had a satellite as well. Lassell soon proved that the ring was a product of his new telescope's distortion, but the satellite Triton remained. The above picture of Triton was taken in 1989 by the only spacecraft ever to pass Triton: Voyager 2. Voyager 2 found fascinating terrain, a thin atmosphere, and even evidence for ice volcanoes on this world of peculiar orbit and spin. Ironically, Voyager 2 also confirmed the existence of complete thin rings around Neptune - but these would have been quite invisible to Lassell!
Copyright status
This image is credited to NASA and the Jet Propulsion Laboratory. Per JPL/NASA policy and applicable United States federal law, such images are in the public domain, or, if they are owned by individuals or institutions other than NASA or JPL, may be used for any journalistic, educational, or personal purpose (but not a commercial purpose) without further authorization. NASA and JPL images, other than their respective institutional logos, or photographs of actual persons, are not subject to copyright and may be used without additional permission, unless otherwise declared. For details, see the JPL Image Use Policy Declaration.
Source
NASA, JPL, and Voyager 2 Science Team, http://antwrp.gsfc.nasa.gov/apod/image/triton1_vg2.gif (Converted to jpg by User:Temlakos)
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment |
|---|
| current | 23:35, 9 May 2008 |  | 446 × 374 (167 KB) | Temlakos | True-color image of Triton by Voyager 2 === Original Caption === On October 10th, 1846, William Lassell was observing the newly discovered planet Neptune. He was attempting to confirm his observation, made just the previous week, that Neptune had a ring. |
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