Martian dust devils finally caught on camera

NewScientist.com

Swirling dust devils on Mars have given NASA scientists both a scientific treat and a very welcome power boost.

On 10 March, the rover Spirit captured images of two dust devils in one day. It is the first time any have been seen on Mars since first being identified in a single image from the Mars Pathfinder mission in 1997. One of the two appears on two different images from the rover's Navigation Camera, making it possible to track its direction and speed.