After illumination testing of the solar array panels, technicians begin stowing the panels on the Phoenix Mars Lander spacecraft. The Phoenix will be launched toward Mars to land in icy soils near the planet's north polar permanent ice cap. It will explore the history of the water in these soils and any associated rocks, while monitoring polar climate. Landing on Mars 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. Phoenix is scheduled to launch Aug. 3 from Pad 17-A at Cape Canaveral Air Force Station . Photo credit: NASA/Kim Shiflett