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The twin STEREO spacecraft have different views of the Sun. By combining pictures from the two spacecraft, we can create 3D stereoscopic views of the Sun and CMEs.
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Image courtesy of NASA/Johns Hopkins University Applied Physics Laboratory.

Solar TErrestrial RElations Observatory (STEREO) Space Mission

Solar TErrestrial RElations Observatory (STEREO) is a NASA space mission to study the Sun and Coronal Mass Ejections (CME).

STEREO was launched in October 2006. The mission involves two identical spacecraft. After launch, the two spacecraft flew by the Moon on slightly different paths. The Moon's gravity redirected the spacecraft; one was flung forward along Earth's orbit around the Sun, while the other was steered backward along Earth's orbit.

The separated spacecraft have different views of the Sun. By combining simultaneous views from both spacecraft, scientists can create 3D stereoscopic images of the Sun and of the huge "solar storms" that sometimes blast outward from it.

Last modified May 4, 2010 by Randy Russell.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA