In Hangar A&O on Cape Canaveral Air Force Station in Florida, workers conduct a steering test on the first stage of a Delta II rocket. The rocket is designated for the launch of the Phoenix Mars Lander spacecraft. Phoenix will land in icy soils near the north polar permanent ice cap of Mars and explore the history of the water in these soils and any associated rocks, while monitoring polar climate. Landing is planned in May 2008 on arctic ground where a mission currently in orbit, Mars Odyssey, has detected high concentrations of ice just beneath the top layer of soil. Launch of Phoenix is targeted for Aug. 3. Photo credit: NASA/Kim Shiflett
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