KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., the STEREO observatory "B" will undergo testing. STEREO, which stands for Solar Terrestrial Relations Observatory, consists of two spacecraft whose mission is to take measurements of the sun and solar wind in 3-D, for the first time. This new view will improve our understanding of space weather and its impact on the Earth. Preparations are under way for a liftoff aboard a Delta rocket no earlier than July 30. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., blanket insulation is being installed on observatory "A" of the STEREO spacecraft. STEREO, which stands for Solar Terrestrial Relations Observatory, consists of two spacecraft whose mission is to take measurements of the sun and solar wind in 3-D, for the first time. This new view will improve our understanding of space weather and its impact on the Earth. Preparations are under way for a liftoff aboard a Delta rocket no earlier than July 30. Photo credit: NASA/Photo credit: NASA/Jack Pfaller

KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., technicians remove the protective cover on the solar panel on the STEREO observatory "A" before deployment and testing. STEREO, which stands for Solar Terrestrial Relations Observatory, consists of two spacecraft whose mission is to take measurements of the sun and solar wind in 3-D, for the first time. This new view will improve our understanding of space weather and its impact on the Earth. Preparations are under way for a liftoff aboard a Delta rocket no earlier than July 30. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., technicians prepare to deploy the solar panel on the STEREO observatory "A." STEREO, which stands for Solar Terrestrial Relations Observatory, consists of two spacecraft whose mission is to take measurements of the sun and solar wind in 3-D, for the first time. This new view will improve our understanding of space weather and its impact on the Earth. Preparations are under way for a liftoff aboard a Delta rocket no earlier than July 30. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., engineers perform testing on the solar panel on the STEREO observatory "A." STEREO, which stands for Solar Terrestrial Relations Observatory, consists of two spacecraft whose mission is to take measurements of the sun and solar wind in 3-D, for the first time. This new view will improve our understanding of space weather and its impact on the Earth. Preparations are under way for a liftoff aboard a Delta rocket no earlier than July 30. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., the deployed solar panel on the STEREO observatory "A" undergoes testing. STEREO, which stands for Solar Terrestrial Relations Observatory, consists of two spacecraft whose mission is to take measurements of the sun and solar wind in 3-D, for the first time. This new view will improve our understanding of space weather and its impact on the Earth. Preparations are under way for a liftoff aboard a Delta rocket no earlier than July 30. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., the solar panel on the STEREO observatory "A" has been deployed for testing. STEREO, which stands for Solar Terrestrial Relations Observatory, consists of two spacecraft whose mission is to take measurements of the sun and solar wind in 3-D, for the first time. This new view will improve our understanding of space weather and its impact on the Earth. Preparations are under way for a liftoff aboard a Delta rocket no earlier than July 30. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., the STEREO observatory "A" is ready for solar array deployment and high-gain antenna tests. STEREO, which stands for Solar Terrestrial Relations Observatory, consists of two spacecraft whose mission is to take measurements of the sun and solar wind in 3-D, for the first time. This new view will improve our understanding of space weather and its impact on the Earth. Preparations are under way for a liftoff aboard a Delta rocket no earlier than July 30. Photo credit: NASA/George Shelton

KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., technicians complete installation of blanket insulation on observatory "A" of the STEREO spacecraft. STEREO, which stands for Solar Terrestrial Relations Observatory, consists of two spacecraft whose mission is to take measurements of the sun and solar wind in 3-D, for the first time. This new view will improve our understanding of space weather and its impact on the Earth. Preparations are under way for a liftoff aboard a Delta rocket no earlier than July 30. Photo credit: NASA/Photo credit: NASA/Jack Pfaller