File:PIA01538 Complex Geologic History of Triton.jpg

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Summary

Description	English: NASA's original caption: "Part of the complex geologic history of icy Triton, Neptune's largest satellite, is shown in this Voyager 2 photo, which has a resolution of 900 meters (2,700 feet) per picture element. The photo was received as part of a Triton-mapping sequence between 3:30 and 5:30 a.m. (PDT). This view is about 500 kilometers (300 miles) across. It encompasses two depressions, possibly old impact basins, that have been extensively modified by flooding, melting, faulting, and collapse. Several episodes of filling and partial removal of material appear to have occurred. The rough area in the middle of the bottom depression probably marks the most recent eruption of material. Only a few impact craters dot the area, which shows the dominance of internally driven geologic processes on Triton." The image shows two of Triton's cryovolcanic "walled plains", Tuonela Planitia (left) and Ruach Planitia (center). It should be noted that this NASA image is inconsistent with maps of Triton and other NASA images, such as 1 and 2, and thus must be incorrectly portrayed (reversed in the vertical dimension). Português: crateras em Tritão
Date	26 August 1989
Source	http://photojournal.jpl.nasa.gov/catalog/PIA01538
Author	NASA / JPL

This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA01538.

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	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

File history

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	Date/Time	Dimensions	User	Comment
current	07:46, 21 April 2015	1,885 × 1,903 (452 KB)	Jcpag2012	flipped vertically, NASA photo
	07:40, 21 April 2015	1,885 × 1,903 (451 KB)	Jcpag2012	Reverted to version as of 02:57, 16 August 2005 - NASA photo
	21:19, 1 January 2010	1,885 × 1,903 (634 KB)	Supportstorm	Image Adjustments: Auto levels on contrast and color
	02:57, 16 August 2005	1,885 × 1,903 (451 KB)	PedroPVZ	{{en}} Tritan basins {{pt}} crateras em Tritão {{PD-USGov-NASA}} category:Triton (moon)