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Photos: Tire tracks and dust devils on Mars

The Mars rovers are still traveling and taking snapshots more than a year after they were supposed to stop rolling.

Tire tracks and dust devils on Mars

A recent view across the Martian landscape from the rover Opportunity, which--along with its compatriot Spirit--are still exploring the red planet months after they were expected to shut down.

CREDIT: NASA/JPL

tire tracks on Mars

Tire tracks and dust devils on Mars

Spirit keeps an eye out for dust devils, or mini tornados. The windstorms may actually have helped the rovers by blowing dust off their solar panels.

CREDIT: NASA/JPL

dust devils

Tire tracks and dust devils on Mars

Opportunity takes a look at its heat shield. After viewing these images, engineers say they were pleased with how the seal performed.

CREDIT: NASA/JPL/Cornell

Rover heat shield

Tire tracks and dust devils on Mars

The false-color blue on the surface indicates sulfur-rich rock excavated by Spirit in Mars' Gusev Crater.

CREDIT: NASA/JPL/Cornell

sulfur-rich Martian rocks

Tire tracks and dust devils on Mars

A technician kneels next to one of the rovers and a replica of the first six-wheeled visitor to Mars, Pathfinder.

CREDIT: NASA/JPL

sizing up the rover

Tire tracks and dust devils on Mars

A view of Spirit, one of the Mars rovers, in the factory and without its protective gear.

CREDIT: NASA/JPL

Spirit