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Explanation: What is creating these unusual spots? Light-colored spots on Martian rocks, each surrounded by a dark border, were discovered last year by NASA's Perseverance Rover currently exploring Mars. Dubbed leopard spots because of their seemingly similarity to markings on famous Earth-bound predators, these curious patterns are being studied with the possibility they were created by ancient Martian life. The pictured spots measure only millimeters across and were discovered on a larger rock named Cheyava Falls. The exciting but unproven speculation is that long ago, microbes generated energy with chemical reactions that turned rock from red to white while leaving a dark biosignature ring, like some similarly appearing spots on Earth rocks. Although other non-biological explanations have not been ruled out, speculation focusing on this potential biological origin is causing much intrigue.
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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
Publications with words: Mars
See also:
- APOD: 2025 July 15 Á Collapse in Hebes Chasma on Mars
- APOD: 2025 July 6 Á The Spiral North Pole of Mars
- APOD: 2025 June 29 Á Dark Sand Cascades on Mars
- APOD: 2025 June 22 Á A Berry Bowl of Martian Spherules
- APOD: 2025 June 15 Á Two Worlds One Sun
- Perseverance Selfie with Ingenuity
- Deimos Before Sunrise