One of NASA's Solar Terrestrial Relations Observatory STEREO spacecraft is moved into Astrotech to begin preparations.

One of NASA's Solar Terrestrial Relations Observatory (STEREO) spacecraft is moved into Astrotech, a payload processing facility near Kennedy Space Center in Florida, to begin preparations and final testing for launch. Liftoff will occur aboard a Boeing Delta II rocket from Launch Complex 17 on Cape Canaveral Air Force Station in the summer. STEREO consists of two spacecraft whose mission is the first to take measurements of the sun and solar wind in 3-D. This new view will improve our understanding of space weather and its impact on the Earth. Photo credit: NASA/Jim Grossmann