SOHO: The Solar and Heliospheric Observatory
The 1861-kilogram SOHO satellite was launched on 4 December 1995
to investigate the Sun from its interior to its outer atmosphere
where the solar wind is produced. Observations with SAO's Ultraviolet
Coronagraph Spectrometer (large golden cylindrical instrument) have
led to a major advance in the understanding of solar wind acceleration.
SOHO is a joint program of NASA and the European Space Agency.
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