Martian dust devil whirls into Opportunity's view
Thursday, July 29, 2010 - 05:35
in Astronomy & Space
In its six-and-a-half years on Mars, NASA's Mars Exploration Rover Opportunity had never seen a dust devil before this month, despite some systematic searches in past years and the fact that its twin rover, Spirit, has seen dozens of dust devils at its location halfway around the planet...