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Explanation: What created this unusually textured rock on Mars? Most probably: a volcano. Dubbed Bumpy Boulder, the strange stone measuring just under a half-meter high was found by the robotic Spirit rover currently rolling across Mars. Pits on the raged rock are likely vesicles and arise from hot gas bubbling out of hot rock ejected by an active Martian volcano. Several similar rocks are visible near Bumpy Boulder that likely have a similar past. The above true-color image was taken about one month ago. The Spirit rover, now in its third year of operation on Mars, is weathering the low sunlight winter of Mar's northern hemisphere on a hillside slope in order to maximize the amount of absorbable battery-refreshing sunlight.
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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 - volcano
Publications with words: Mars - volcano
See also:
- APOD: 2025 April 13 B An Unusual Hole in Mars
- APOD: 2025 March 23 B Ancient Ogunquit Beach on Mars
- SuperCam Target on Maaz
- Full Moon, Full Mars
- APOD: 2025 January 15 B Wolf Moon Engulfs Mars
- APOD: 2024 December 3 B Ice Clouds over a Red Planet
- APOD: 2024 November 10 B Valles Marineris: The Grand Canyon of Mars