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The Solar and Heliospheric Observatory
The SOHO mission is a part of NASA's Goddard Space Flight Center.
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European Space Agency
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Artist concept of space weather showing an active Sun with flares and a CME in the upper right, the Earth in the lower right with types of technology affected by space weather to the lower left; satellites, airplanes, the ISS and ground-based electrical lines. Heliophysics
Studying the Sun-Earth connection.
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The SOHO Mission

The Solar & Heliospheric Observatory (SOHO) project is a cooperative effort between the European Space Agency (ESA) and NASA. SOHO was designed to study the internal structure of the Sun, its extensive outer atmosphere and the origin of the solar wind, the stream of highly ionized gas that blows continuously outward through the Solar System.

SOHO was launched on December 2, 1995. The SOHO spacecraft was built in Europe by an industry team led by Matra, and instruments were provided by European and American scientists. NASA was responsible for the launch and is now responsible for mission operations. Large radio dishes around the world which form NASA's Deep Space Network are used to track the spacecraft beyond the Earth's orbit. Mission control is based at Goddard Space Flight Center in Maryland.

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The Sun Now

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Press Contact

Members of the media, please contact:

Goddard Space Flight Center
Susan Hendrix

Media Resources

SOHO Fact Sheet:
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SOHO Science Operations Plan:
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SOHO Publications:
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Page Last Updated: May 7th, 2014
Page Editor: Holly Zell