SUMMARY: NASA's Spirit rover has been fortunate enough this week to spot a tiny dust devil scurrying across the surface of Mars. The various orbiters have seen crisscrossing dust devil tracks, but this is the first time one has been captured on camera from the surface. It also appears that Spirit was recently dusted off by one of these mini-twisters, cleaning off accumulations of dust, and boosting its available power for operations. This also happened a few months ago to Spirit's twin, Opportunity.

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