Volcanic ash is creeping across the surface of Mars with startling speed. The European Space Agency’s (ESA’s) Mars Express ...

Observations by the Mars Express orbiter reveal rapid changes on the Red Planet’s surface from windblown volcanic ash ...

The Mars Express orbiter launched to the Red Planet. Twenty years later, ESA has delivered a high resolution color image of ...

The European Space Agency (ESA) has uncovered new evidence of a dark ash blanket slowly spreading across Mars, an occurrence ...

Noticeable change on Mars often takes millions of years—but the European Space Agency's Mars Express has captured a blanket ...

A new image shows a striking contrast between Mars' desert-like terrain against dark deposits of volcanic ash.