This video shows an unexpected challenge for the Curiosity rover on Mars. After drilling a sample, a large rock fragment became attached to the drill, requiring five days of careful shaking before the ...

This large dust devil in the center consumed a smaller nearby dust devil on Mars in January. Future human visitors to Mars will have to deal with an unfriendly planet. It’s dusty. It’s windy.

What would a 12-mile-high tornado on Mars feel like? NASA's rovers and orbiters give us a front-row seat to these towering ...

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