The Solar and Heliospheric Observatory (SOHO) is stationed 1.5 million kilometres away from Earth. There, it constantly watches the Sun, returning spectacular pictures and data of the storms that rage across its surface.
SOHO's studies range from the Sun's hot interior, through its visible surface and stormy atmosphere, and out to distant regions where the wind from the Sun battles with a breeze of atoms coming from among the stars.
The SOHO mission is a joint ESA/NASA project.
The twelve instruments on board SOHO were provided by European and American scientists. Nine of the international instrument consortia are led by European Principal Investigators (PI's), and three by PI's from the US. Large engineering teams and more than 200 co-investigators from many institutions supported the PI's in the development of the instruments and in the preparation of their operations and data analysis.
NASA was responsible for the launch and is now responsible for mission operations. NASA's Deep Space Network stations are used for data downlink and commanding. Mission control is based at Goddard Space Flight Center in Maryland.
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SOHO - latest solar images and data
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