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Explanation: First imaged by the Mariner 9 spacecraft, Valles Marineris, the grand canyon of Mars, is a system of enormous depressions or chasmas that stretch some 4,000 kilometers along the Martian equator. Looking north over the canyon's central regions, dark Melas Chasma lies in the foreground of this spectacular perspective view. Behind it are Candor Chasma and the steep walls of Ophir Chasma near the horizon. Faulting, surface collapse and landslides are seen to be part of the complex geologic history of these dramatic features, with layered deposits also found within the canyon system. Recorded in 2004, the image represents data from the High Resolution Stereo Camera (HRSC) on board ESA's Mars Express spacecraft. Melas, Candor and Ophir are about 200 kilometers wide and 5 to 7 kilometers deep.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: chasma - Melas Chasma - Valles Marineris - Mars
Publications with words: chasma - Melas Chasma - Valles Marineris - Mars
See also:
- APOD: 2026 July 29 Á Psyche Receives Gravity Assist from Mars
- APOD: 2026 July 28 Á Barnards Loop over Twin Volcanoes
- APOD: 2026 July 21 Á Turtle Rock on Mars
- APOD: 2026 June 27 Á Mars Marathon by Perseverance
- APOD: 2026 February 22 Á Shadow of a Martian Robot
- APOD: 2026 February 1 Á Galle: Happy Face Crater on Mars
- APOD: 2025 September 28 Á Leopard Spots on Martian Rocks