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Explanation: Scroll right and journey for 300 kilometers over Terra Sirenum in the cratered highlands of southern Mars. The infrared view, 32 kilometers wide, was recently recorded by the THEMIS camera on board the orbiting Mars Odyssey spacecraft. Beginning at the north (left) edge, the scene sweeps across the floor and over the rim of Koval'sky Crater. Continuing southward (right) of the crater's rim are lava flows exhibiting fractures and numerous smaller impact craters. The infrared image was made in daylight hours, so sun-facing slopes are still warm and bright while shadowed areas are cool and dark. But rocky regions also tend to remain cooler and darker than their surroundings, likely corresponding to the dark blotchy terrain along the Koval'sky Crater floor and dark rings of rocky ejecta surrounding some of the smaller craters.
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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: Mars - Mars Odyssey - Themis - infrared
Publications with words: Mars - Mars Odyssey - Themis - infrared
See also:
- APOD: 2025 July 15 B Collapse in Hebes Chasma on Mars
- APOD: 2025 July 6 B The Spiral North Pole of Mars
- APOD: 2025 June 29 B Dark Sand Cascades on Mars
- APOD: 2025 June 22 B A Berry Bowl of Martian Spherules
- APOD: 2025 June 15 B Two Worlds One Sun
- Perseverance Selfie with Ingenuity
- Deimos Before Sunrise