Mercury may be more geologically active than previously thought.

Bright streaks on its surface, called lineae, suggest ongoing activity rather than ancient formations.

A survey of 402 lineae shows they often appear on sun-facing crater slopes and near bright depressions called hollows.

These features likely form from heat and volatile materials, like sulfur, rising from beneath the surface, Science Alert has reported.

Future ESA and JAXA missions aim to confirm Mercury’s continuing geological activity.