An artist conception of one of NASA Solar Terrestrial Relations Observatory STEREO spacecraft. The two observatories currently lie on either side of the sun, providing views of the entire sun simultaneously.
Solar Terrestrial Relations Observatory Spacecraft Artist Concept
NASA Solar TErrestrial RElations Observatory STEREO satellites have provided the first three-dimensional images of the Sun. The structure of the corona shows well in this image.
Full Disk Image of the Sun, March 26, 2007
NASA Solar TErrestrial RElations Observatory STEREO satellites have provided the first three-dimensional images of the Sun. The structure of the corona shows well in this image.
Close-up View of an Active Region of the Sun, March 23, 2007
NASA Solar TErrestrial RElations Observatory STEREO satellites have provided the first three-dimensional images of the Sun. The structure of the corona shows well in this image. 3D glasses are necessary to view this image.
Full Disk Image of the Sun, March 26, 2007 Anaglyph
Michael Kaiser, project scientist, Solar Terrestrial Relations Observatory (STEREO) at Goddard Space Flight Center, makes a comment during a Science Update on the STEREO mission at NASA Headquarters in Washington, Tuesday, April 14, 2009. Photo Credit: (NASA/Paul E. Alers)
Stereo Science Update
Madhulika Guhathakurta, seated left, STEREO program scientist, speaks during a press briefing, Thursday, Aug. 18, 2011, at NASA Headquarters in Washington. The briefing was held to discusses new details about the structure of solar storms and the impact they have on Earth. The new information comes from NASA's Solar Terrestrial Relations Observatory, or STEREO, spacecraft and other NASA probes. Photo Credit: (NASA/GSFC/Rebecca Roth)
STEREO Press Briefing
Alysha Reinard, as research scientist with National Oceanic and Atmospheric Administration and the University of Colorado Boulder, speaks during a press briefing, Thursday, Aug. 18, 2011, at NASA Headquarters in Washington. The briefing was held to discusses new details about the structure of solar storms and the impact they have on Earth. The new information comes from NASA's Solar Terrestrial Relations Observatory, or STEREO, spacecraft and other NASA probes. Photo Credit: (NASA/GSFC/Rebecca Roth)
STEREO Press Briefing
Craig DeForest, a staff scientist at the Southwest Research Institute in Boulder, Colo., speaks during a press briefing, Thursday, Aug. 18, 2011, at NASA Headquarters in Washington. The briefing was held to discusses new details about the structure of solar storms and the impact they have on Earth. The new information comes from NASA's Solar Terrestrial Relations Observatory, or STEREO, spacecraft and other NASA probes. Photo Credit: (NASA/GSFC/Rebecca Roth)
STEREO Press Briefing
David Webb, a research physicist from the Institute for Scientific Research at Boston College speaks during a press briefing, Thursday, Aug. 18, 2011, at NASA Headquarters in Washington. The briefing was held to discuss new details about the structure of solar storms and the impact they have on Earth. The new information comes from NASA's Solar Terrestrial Relations Observatory, or STEREO, spacecraft and other NASA probes. Photo Credit: (NASA/GSFC/Rebecca Roth)
STEREO Press Briefing
Michael Kaiser, project scientist, Solar Terrestrial Relations Observatory (STEREO) at Goddard Space Flight Center, left, makes a point during a Science Update on the STEREO mission at NASA Headquarters in Washington, Tuesday, April 14, 2009, as Angelo Vourlidas, project scientist, Sun Earth Connection Coronal and Heliospheric Investigation, at the Naval Research Laboratory, Toni Galvin, principal investigator, Plasma and Superthermal Ion Composition instrument at the University of New Hampshire and Madhulika Guhathkurta, STEREO program scientist, right, look on. Photo Credit: (NASA/Paul E. Alers)
Stereo Science Update
Madhulika Guhathakurta, seated left, STEREO program scientist, speaks during a press briefing, Thursday, Aug. 18, 2011, at NASA Headquarters in Washington as Craig DeForest, David Webb and Alysha Reinard, look on. The briefing was held to discusses new details about the structure of solar storms and the impact they have on Earth. The new information comes from NASA's Solar Terrestrial Relations Observatory, or STEREO, spacecraft and other NASA probes. Photo Credit: (NASA/GSFC/Rebecca Roth).
STEREO Press Briefing
Madhulika Guhathakurta, seated left, STEREO program scientist, speaks during a press briefing, Thursday, Aug. 18, 2011, at NASA Headquarters in Washington as Craig DeForest, David Webb and Alysha Reinard, look on. The briefing was held to discusses new details about the structure of solar storms and the impact they have on Earth. The new information comes from NASA's Solar Terrestrial Relations Observatory, or STEREO, spacecraft and other NASA probes. Photo Credit: (NASA/GSFC/Rebecca Roth)
STEREO Press Briefing
Craig DeForest, second from left, speaks during a press briefing, Thursday, Aug. 18, 2011, at NASA Headquarters in Washington as Madhulika Guhathakurta, left, David Webb and Alysha Reinard look on. The briefing was held to discusses new details about the structure of solar storms and the impact they have on Earth. The new information comes from NASA's Solar Terrestrial Relations Observatory, or STEREO, spacecraft and other NASA probes. Photo Credit: (NASA/GSFC/Rebecca Roth)
STEREO Press Briefing
Angelo Vourlidas, project scientist, Sun Earth Connection Coronal and Heliospheric Investigation, at the Naval Research Laboratory, second from left, makes a comment during a Science Update on the STEREO mission at NASA Headquarters in Washington, Tuesday, April 14, 2009, as Michael Kaiser, project scientist, Solar Terrestrial Relations Observatory (STEREO) at Goddard Space Flight Center, left, Toni Galvin, principal investigator, Plasma and Superthermal Ion Composition instrument at the University of New Hampshire and Madhulika Guhathakurta, STEREO program scientist, right, look on. Photo Credit: (NASA/Paul E. Alers)
Stereo Science Update
Michael Kaiser, project scientist, Solar Terrestrial Relations Observatory (STEREO) at Goddard Space Flight Center, left, makes a comment during a Science Update on the STEREO mission at NASA Headquarters in Washington, Tuesday, April 14, 2009, as Angelo Vourlidas, project scientist, Sun Earth Connection Coronal and Heliospheric Investigation, at the Naval Research Laboratory, second from left, Toni Galvin, principal investigator, Plasma and Superthermal Ion Composition instrument at the University of New Hampshire and Madhulika Guhathakurta, STEREO program scientist, right, look on. Photo Credit: (NASA/Paul E. Alers)
Stereo Science Update
Artist concept of NASA STEREO-A Spacecraft Observing a very active Sun.
NASA STEREO-A Spacecraft Observing a very Active Sun Artist Concept
NASA Solar TErrestrial RElations Observatory satellites have provided the first 3-dimensional images of the Sun. This view will aid scientists ability to understand solar physics to improve space weather forecasting. 3D glasses are necessary.
Close-up View of an Active Region of the Sun, March 23, 2007 Anaglyph
NASA Solar TErrestrial RElations Observatory satellites have provided the first 3-dimensional images of the Sun. This view will aid scientists ability to understand solar physics to improve space weather forecasting. 3D glasses are necessary.
South Pole of the Sun, March 20, 2007 Anaglyph
NASA Solar TErrestrial RElations Observatory satellites have provided the first 3-dimensional images of the Sun. This view will aid scientists ability to understand solar physics to improve space weather forecasting. 3D glasses are necessary.
Left Limb of North Pole of the Sun, March 20, 2007 Anaglyph
NASA Solar TErrestrial RElations Observatory satellites have provided the first 3-dimensional images of the Sun. This view will aid scientists ability to understand solar physics to improve space weather forecasting.
Closer View of the Equatorial Region of the Sun, March 24, 2007
NASA Solar TErrestrial RElations Observatory satellites have provided the first 3-dimensional images of the Sun. This view will aid scientists ability to understand solar physics to improve space weather forecasting. .
South Pole of the Sun, March 20, 2007
NASA Solar TErrestrial RElations Observatory satellites have provided the first 3-dimensional images of the Sun. This view will aid scientists ability to understand solar physics to improve space weather forecasting.
Left Limb of North Pole of the Sun, March 20, 2007
NASA Solar TErrestrial RElations Observatory satellites have provided the first 3-dimensional images of the Sun. This view will aid scientists ability to understand solar physics to improve space weather forecasting. 3D glasses are necessary.
Closer View of the Equatorial Region of the Sun, March 24, 2007 Anaglyph
NASA Solar TErrestrial RElations Observatory satellites have provided the first 3-dimensional images of the Sun. This view will aid scientists ability to understand solar physics to improve space weather forecasting. 3D glasses are necessary.
North Pole of the Sun, March 20, 2007 Anaglyph
NASA Solar TErrestrial RElations Observatory satellites have provided the first 3-dimensional images of the Sun. This view will aid scientists ability to understand solar physics to improve space weather forecasting. 3D glasses are necessary.
Right Limb of the South Pole of the Sun, March 18, 2007 Anaglyph
NASA Solar TErrestrial RElations Observatory satellites have provided the first 3-dimensional images of the Sun. This view will aid scientists ability to understand solar physics to improve space weather forecasting.
Right Limb of the South Pole of the Sun, March 18, 2007
NASA Solar TErrestrial RElations Observatory satellites have provided the first 3-dimensional images of the Sun. This view will aid scientists ability to understand solar physics to improve space weather forecasting.
North Pole of the Sun, March 20, 2007
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
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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
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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
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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
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., technicians check the STEREO spacecraft "B" as it is lifted off a tilt table. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket on July 22. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., technicians check the STEREO spacecraft "B" as it is lowered toward a stand on the floor. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket on July 22. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., the STEREO spacecraft "B" is being moved to a another stand nearby for testing. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket on July 22. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., technicians check the STEREO spacecraft "B" is secure on the stand. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket on July 22. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., a technician works a guideline to the overhead crane as the STEREO spacecraft "B" is being moved to a stand nearby for testing. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket on July 22. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., technicians perform black-light inspection and cleaning of Observatory B, part of the STEREO spacecraft. The observatory will later be wrapped for transfer to the hazardous processing facility and fueling. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket no earlier than Aug. 1. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - In the hazardous processing facility at Astrotech Space Operations in Titusville, Fla., technicians begin attaching an overhead crane to Observatory A of the STEREO spacecraft. The observatory will be lifted onto a scale for weight measurements and later will be fueled. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket no earlier than Aug. 1. Photo credit: NASA/Jack Pfaller
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KENNEDY SPACE CENTER, FLA. - The STEREO observatories are the focus of attention at a media viewing held at Astrotech Space Operations in Titusville, Fla. The two observatories were mated for launch but will separate into different orbits for their mission. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - The STEREO observatories are the focus of attention at a media viewing held at Astrotech Space Operations in Titusville, Fla., on Aug. 11. The two observatories were mated for launch but will separate into different orbits for their mission. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - The STEREO observatories are the focus of attention at a media viewing held at Astrotech Space Operations in Titusville, Fla., on Aug. 11. The two observatories were mated for launch but will separate into different orbits for their mission. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - The STEREO observatories are the focus of attention at a media viewing held at Astrotech Space Operations in Titusville, Fla., on Aug. 11. The two observatories were mated for launch but will separate into different orbits for their mission. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - The STEREO observatories are the focus of attention at a media viewing held at Astrotech Space Operations in Titusville, Fla. The two observatories were mated for launch but will separate into different orbits for their mission. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - In the hazardous processing facility at Astrotech Space Operations in Titusville, Fla., technicians begin removing the protective cover from Observatory A of the STEREO spacecraft. The observatory will be lifted onto a scale for weight measurements and later will be fueled. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket no earlier than Aug. 1. Photo credit: NASA/Jack Pfaller
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KENNEDY SPACE CENTER, FLA. - The STEREO observatories are the focus of attention at a media viewing held at Astrotech Space Operations in Titusville, Fla., on Aug. 11. The two observatories were mated for launch but will separate into different orbits for their mission. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - In the hazardous processing facility at Astrotech Space Operations in Titusville, Fla., technicians check Observatory A before lifting onto a scale for weight measurements. The observatory is one of two in the STEREO spacecraft and later will be fueled. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket no earlier than Aug. 1. Photo credit: NASA/Jack Pfaller
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KENNEDY SPACE CENTER, FLA. - In the hazardous processing facility at Astrotech Space Operations in Titusville, Fla., technicians begin removing the protective cover from Observatory A of the STEREO spacecraft. The observatory will be lifted onto a scale for weight measurements and later will be fueled. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket no earlier than Aug. 1. Photo credit: NASA/Jack Pfaller
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KENNEDY SPACE CENTER, FLA. - The STEREO observatories are the focus of attention at a media viewing held at Astrotech Space Operations in Titusville, Fla., on Aug. 11. The two observatories were mated for launch but will separate into different orbits for their mission. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - In the hazardous processing facility at Astrotech Space Operations in Titusville, Fla., technicians remove the protective cover from the top of Observatory A, one of two STEREO spacecraft. The observatory will be lifted onto a scale for weight measurements and later will be fueled. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket no earlier than Aug. 1. Photo credit: NASA/Jack Pfaller
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., technicians perform black-light inspection and cleaning of Observatory B, part of the STEREO spacecraft. The observatory will later be wrapped for transfer to the hazardous processing facility where it will be weighed and fueled. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket no earlier than Aug. 1. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - The STEREO observatories are the focus of attention at a media viewing held at Astrotech Space Operations in Titusville, Fla. The two observatories were mated for launch but will separate into different orbits for their mission. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - The STEREO observatories are the focus of attention at a media viewing held at Astrotech Space Operations in Titusville, Fla. The two observatories were mated for launch but will separate into different orbits for their mission. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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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
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers prepare one of the STEREO observatories that will be lifted and moved. It will be mated to the other observatory, in the background, for launch. STEREO, which stands for Solar Terrestrial Relations Observatory, is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket from Launch Pad 17-B at Cape Canaveral Air Force Station on Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers guide one of the STEREO observatories as it is lowered toward the other observatory. They will be mated for launch. STEREO, which stands for Solar Terrestrial Relations Observatory, is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket from Launch Pad 17-B at Cape Canaveral Air Force Station on Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., one of the STEREO observatories is lifted and moved toward the other observatory, in the background. They will be mated for launch. STEREO, which stands for Solar Terrestrial Relations Observatory, is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket from Launch Pad 17-B at Cape Canaveral Air Force Station on Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., one of the STEREO observatories is lifted and moved toward the other observatory, in the background. They will be mated for launch. STEREO, which stands for Solar Terrestrial Relations Observatory, is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket from Launch Pad 17-B at Cape Canaveral Air Force Station on Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers prepare one of the STEREO observatories that will be lifted and moved. It will be mated to the other observatory, in the background, for launch. STEREO, which stands for Solar Terrestrial Relations Observatory, is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket from Launch Pad 17-B at Cape Canaveral Air Force Station on Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers guide one of the STEREO observatories as it is lowered toward the other observatory. They will be mated for launch. STEREO, which stands for Solar Terrestrial Relations Observatory, is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket from Launch Pad 17-B at Cape Canaveral Air Force Station on Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - Technicians inside the Astrotech facility in Titusville, Florida, prepare to move the STEREO spacecraft to the spin table. The twin observatories will undergo a spin test to check balance and alignment in preparation for flight. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - Technicians inside the Astrotech facility in Titusville, Florida, move the STEREO spacecraft to the spin table. The twin observatories will undergo a spin test to check balance and alignment in preparation for flight. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - Technicians inside the Astrotech facility in Titusville, Florida, move the STEREO spacecraft to the spin table. The twin observatories will undergo a spin test to check balance and alignment in preparation for flight. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., technicians are ready to wrap more plastic around STEREO's Observatory B before its transfer to the hazardous processing facility where it will be weighed and fueled. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket no earlier than Aug. 1. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - Technicians inside the Astrotech facility in Titusville, Florida, move the STEREO spacecraft to the spin table. The twin observatories will undergo a spin test to check balance and alignment in preparation for flight. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - Technicians inside the Astrotech facility in Titusville, Florida, move the STEREO spacecraft to the spin table. The twin observatories will undergo a spin test to check balance and alignment in preparation for flight. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - The STEREO spacecraft sits on a test stand inside the Astrotech facility in Titusville, Florida. The twin observatories will undergo a spin test to check balance and alignment in preparation for flight. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31, from Launch Pad 17-B on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/George Shelton.
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KENNEDY SPACE CENTER, FLA. - In the hazardous processing facility at Astrotech Space Operations in Titusville, Fla., Observatory A of the STEREO spacecraft waits for its move to a scale and later will be fueled. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket no earlier than Aug. 1. Photo credit: NASA/Jack Pfaller
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers have successfully mated the two STEREO observatories, which is the launch configuration. STEREO, which stands for Solar Terrestrial Relations Observatory, is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket from Launch Pad 17-B at Cape Canaveral Air Force Station on Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers look at the Delta third stage, or upper stage booster. In the background are the recently mated STEREO observatories, which is the launch configuration. STEREO, which stands for Solar Terrestrial Relations Observatory, is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket from Launch Pad 17-B at Cape Canaveral Air Force Station on Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers move the mated STEREO observatories, which is the launch configuration. STEREO, which stands for Solar Terrestrial Relations Observatory, is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket from Launch Pad 17-B at Cape Canaveral Air Force Station on Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers check the mating of the two STEREO observatories, which is the launch configuration. STEREO, which stands for Solar Terrestrial Relations Observatory, is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket from Launch Pad 17-B at Cape Canaveral Air Force Station on Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., the tilt table lowers the STEREO spacecraft "A." In this position, technicians can perform the final comprehensive performance test of the instruments, verifying the instrument is fully functional before flight. After a rotation, this configuration also allows deployment tests to be done on the solar arrays. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket on July 22. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - The first stage of the Boeing Delta II rocket, slated to launch NASA's Solar Terrestrial Relations Observatory (STEREO), arrives at Pad 17B on Cape Canaveral Air Force Station. Preparations are under way for a liftoff no earlier than July 22. 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
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., the Solar Electron and Proton Telescope (SEPT) is seen on the STEREO observatory "B." SEPT is part of the Solar Energetic Particles Package of four telescopes, all part of the In situ Measurements of Particles & CME Transients (IMPACT) instrument suite. 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
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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
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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
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KENNEDY SPACE CENTER, FLA. - At Launch Pad 17-B on Cape Canaveral Air Force Station, the Boeing Delta II second stage for the STEREO launch is moved inside the mobile service tower. The second stage then will be lifted into the mobile service tower and mated with first stage already in place. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off in August 2006. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Launch Pad 17-B on Cape Canaveral Air Force Station, the Boeing Delta II second stage for the STEREO launch is lifted alongside the mobile service tower. The second stage then will be lifted into the mobile service tower and mated with first stage already in place. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off in August 2006. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - Inside the mobile service tower on Launch Pad 17-B on Cape Canaveral Air Force Station, workers help guide the Boeing Delta II second stage for the STEREO launch onto the first stage for mating. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off in August 2006. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - Inside the mobile service tower on Launch Pad 17-B on Cape Canaveral Air Force Station, workers stand by as the Boeing Delta II second stage for the STEREO launch is lowered onto the first stage for mating. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off in August 2006. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., technicians check the STEREO spacecraft "B" as it moves away from a tilt table (at right). The spacecraft will be placed on another stand nearby. STEREO stands for Solar Terrestrial Relations Observatory. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off aboard a Boeing Delta II rocket on July 22. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., the upper portion of the transportation canister is lowered over the STEREO spacecraft (in front). When the entire configuration is encased, it will be moved to Launch Pad 17-B at Cape Canaveral Air Force Station. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off Aug. 31. Photo credit: NASA/Kim Shiflett
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KENNEDY SPACE CENTER, FLA. - Inside the mobile service tower on Launch Pad 17-B at Cape Canaveral Air Force Station, the second stage of the Boeing Delta II launch vehicle for the STEREO spacecraft is being remated with the Delta first stage. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31. Photo credit: NASA/Dimitri Gerondidakis
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KENNEDY SPACE CENTER, FLA. - Inside the mobile service tower on Launch Pad 17-B on Cape Canaveral Air Force Station, the Boeing Delta II second stage for the STEREO launch is lowered toward the first stage. The two stages will be mated. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off in August 2006. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers maneuver the upper portion of the transportation canister that will be lowered over the STEREO spacecraft (in front). When the entire configuration is encased, it will be moved to Launch Pad 17-B at Cape Canaveral Air Force Station. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off Aug. 31. Photo credit: NASA/Kim Shiflett
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., the STEREO payload is ready for mating to the upper stage booster. Here, a crane is being attached to the spacecraft to lift it. After the mating, all will be transported to Launch Pad 17-B at Cape Canaveral Air Force Station for integration with the Delta II already on the pad. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - Inside the mobile service tower on Launch Pad 17-B on Cape Canaveral Air Force Station, the Boeing Delta II second stage for the STEREO launch is lowered toward the first stage. The two stages will be mated. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off in August 2006. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers guide the STEREO spacecraft toward the upper stage booster in the background. The spacecraft will be mated to the upper stage and then transported to Launch Pad 17-B at Cape Canaveral Air Force Station for integration with the Delta II already on the pad. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers begin mating the STEREO spacecraft onto the upper stage booster below. After the mating, they will be transported to Launch Pad 17-B at Cape Canaveral Air Force Station for integration with the Delta II already on the pad. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers check the progress of the upper portion of the transportation canister as it is lowered over the STEREO spacecraft. When the entire configuration is encased, it will be moved to Launch Pad 17-B at Cape Canaveral Air Force Station. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off Aug. 31. Photo credit: NASA/Kim Shiflett
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., a worker examines the STEREO spacecraft as the upper portion of the transportation canister is lowered over the top. When the entire configuration is encased, it will be moved to Launch Pad 17-B at Cape Canaveral Air Force Station. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off Aug. 31. Photo credit: NASA/Kim Shiflett
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KENNEDY SPACE CENTER, FLA. - At Launch Pad 17-B on Cape Canaveral Air Force Station, workers prepare the Boeing Delta II second stage for the STEREO launch to be lifted off the transporter. The second stage then will be lifted into the mobile service tower and mated with first stage already in place. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off in August 2006. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - Inside the mobile service tower on Launch Pad 17-B on Cape Canaveral Air Force Station, workers help guide the Boeing Delta II second stage for the STEREO launch onto the first stage for mating. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off in August 2006. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers begin to install the lower portion of the transportation canister around the upper stage booster attached to the STEREO spacecraft (above). The entire configuration will be encased for the move to Launch Pad 17-B at Cape Canaveral Air Force Station. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off Aug. 31. Photo credit: NASA/Kim Shiflett
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers move the stand holding the STEREO spacecraft and upper stage booster. The entire configuration will be encased for the move to Launch Pad 17-B at Cape Canaveral Air Force Station. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off Aug. 31. Photo credit: NASA/Kim Shiflett
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers guide the lifting of the STEREO payload to move it for mating to the upper stage booster. After the mating, all will be transported to Launch Pad 17-B at Cape Canaveral Air Force Station for integration with the Delta II already on the pad. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off Aug. 31. Photo credit: NASA/George Shelton
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., the upper portion of the transportation canister is lowered over the STEREO spacecraft (in front). When the entire configuration is encased, it will be moved to Launch Pad 17-B at Cape Canaveral Air Force Station. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off Aug. 31. Photo credit: NASA/Kim Shiflett
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers help guide the upper portion of the transportation canister onto the lower portion. The canister encases the STEREO spacecraft for its move to Launch Pad 17-B at Cape Canaveral Air Force Station. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off Aug. 31. Photo credit: NASA/Kim Shiflett
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KENNEDY SPACE CENTER, FLA. - At Astrotech Space Operations in Titusville, Fla., workers check the fitting of the upper portion of the transportation canister onto the lower portion. The canister encases the STEREO spacecraft for its move to Launch Pad 17-B at Cape Canaveral Air Force Station. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off Aug. 31. Photo credit: NASA/Kim Shiflett
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KENNEDY SPACE CENTER, FLA. - At Launch Complex 17 on Cape Canaveral Air Force Station, the second stage of the Boeing Delta II launch vehicle for the STEREO spacecraft is returned to the pad. The stage was tested for leaks in the High-Pressure Test Facility but no leak was observed. The second stage will be remated with the Delta first stage. STEREO stands for Solar Terrestrial Relations Observatory and comprises two spacecraft. The STEREO mission is the first to take measurements of the sun and solar wind in 3-dimension. This new view will improve our understanding of space weather and its impact on the Earth. STEREO is expected to lift off on Aug. 31. Photo credit: NASA/Dimitri Gerondidakis
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