ESA Mars Express captures unusual dune patterns on Mars

European Space Agency (ESA) scientists released new images from the Mars Express orbiter that reveal unusual, wave‑like patterns on the Martian surface. The spacecraft’s high‑resolution cameras captured the features in the northern highlands, where the waves appear to be concentric ridges and troughs spanning several kilometers. Initial analyses suggest the patterns may be the result of ancient, buried ice sheets or subsurface water flows that have since frozen and expanded, creating a ripple‑like texture in the regolith.

The discovery adds to a growing body of evidence that Mars once harbored extensive bodies of liquid water. By comparing the new images with older data sets, researchers aim to determine the age of the waves and whether they coincide with known volcanic or tectonic activity. If the waves are indeed the remnants of ancient water, they could provide critical clues about the planet’s climatic evolution and the potential habitability of its past environments.

ESA plans to conduct further observations with Mars Express’s spectrometer instruments to confirm the composition of the wave structures. The findings will be presented at the upcoming planetary science conference, where scientists hope to refine models of Mars’ geological history and assess the implications for future exploration missions.