Welcome to the STEREO website!
STEREO consists of two space-based observatories - one ahead of Earth in its orbit, the other trailing behind. With this new pair of viewpoints, scientists will be able to see the structure and evolution of solar storms as they blast from the Sun and move out through space.
Featured Gallery Items
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BEST OF STEREO
This gallery showcases the best images and movie STEREO has to offer.
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STEREO SELECTS
A selection of some of our favorite video clips and images as they occur.
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 What's New
 For more news about STEREO
- No separation anxiety for STEREO
Date – August 19, 2008The two STEREO spacecraft (Ahead and Behind) continue to separate, by orbit design, so that they are 66 degrees apart from each other as of August 5, 2008. This allows them to see more and more of the Sun at the same time. The Behind spacecraft can see 31 degrees more of the Sun than can be seen from Earth.
- STEREO Creates First Images of the Solar System's Invisible Frontier
Date – July 3, 2008GREENBELT, Md. -- NASA's sun-focused Solar Terrestrial Relations Observatory, or STEREO, twin spacecraft unexpectedly detected particles from the edge of the solar system last year. This helped scientists map the energized particles where the hot solar wind slams into the cold interstellar medium.
Visit STEREO on the NASA Portal.
Last Revised: Wednesday, 25-Jun-2008 12:01:18 EDT
Responsible NASA Official: Michael L. Kaiser
Privacy Policy and Important Notices
Webmaster: Kevin Addison
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