Squeaky clean on Mars?

You'd think on a multi-million dollar budget, they would have thought of adding a little bottle of Windex and a squeegee arm for the Mars rovers, but hey...you take what you can get:

Mars scientists and engineers are elated about a dust-busting blast that has struck the Spirit rover at its Gusev crater exploration site.

Turns out that a martian whirlwind - dubbed a dust devil - likely zoomed over the robot high up in the Columbia Hills. That fleeting flyby effectively cleaned Spirit's solar arrays, giving the robot a new lease on life.

Engineers report that the rover's power reading quickly shot up to almost as high as when the rover landed on Mars over a year ago.

That just means more cool-ass pictures from the rovers!