Overview
- Side‑by‑side images from NASA’s Viking orbiter in 1976 and ESA’s Mars Express camera in 2024 show a dark area that now covers more ground, with new reporting placing it in the Utopia Planitia region.
- Scientists at Germany’s aerospace center (DLR) identify the material as volcanic ash and sand made of dark minerals such as olivine and pyroxene.
- Researchers outline two wind-driven possibilities: the dark ash and sand shifted across the surface, or red dust that once hid darker layers was blown away.
- The comparison shows that Martian winds can reshape the planet’s look within decades, even though surface changes usually unfold over much longer times.
- No evidence points to current eruptions, which fits with Mars’ known volcanic past that includes Olympus Mons, while DLR’s HRSC camera has mapped the planet in detail since 2004 and is studying Utopia Planitia for clues such as buried ice.