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  • Solar and Heliospheric Observatory Homepage
    Solar Pick SOHO's 30th Birthday (December 02, 2025) We are celebrating 30 years since the launch of SOHO Happy Birthday! more »
  • Sunspots - Solar and Heliospheric Observatory
    NOTICE: There is an image outage of the Sunspot images due to a cooling water line burst in the Joint Science Operations Center (JSOC) at Stanford University on 2024-11-26 The images are provided by the Solar Dynamics Observatory (SDO) mission Status updates are provided at SDO's JSOC Emergency Resources page List of all available daily images
  • About the SOHO Mission - Solar and Heliospheric Observatory
    SOHO, the Solar Heliospheric Observatory, is a project of international collaboration between ESA and NASA to study the Sun from its deep core to the outer corona and the solar wind
  • The Very Latest SOHO Images - Solar and Heliospheric Observatory
    For details on comets or planets, visit the sungrazer pages
  • SOHO Space Weather - Solar and Heliospheric Observatory
    SPACE WEATHER Space Weather SOHO Real-time View of the Sun What is space weather ? "Conditions on the Sun and in the solar wind, magnetosphere, ionosphere and thermosphere that can influence the performance and reliability of space-borne and ground-based technological systems and can endanger human life or health " (Click to watch)
  • Coronagraphs - Solar and Heliospheric Observatory
    One of the coronagraph instrument on SOHO, LASCO actually contains three coronagraphs, each with a different sized occulting disk so that we can see the fainter and fainter corona, further and further away from the Sun's surface
  • SOHO Free Stuff - Solar and Heliospheric Observatory
    The images, coming directly from 1 5 million kilometres away in space, will flash on your computer screen courtesy of ESA's Solar and Heliospheric Observatory (SOHO) Every time your screen saver kicks in it will look, via the Internet, for the most recent images SOHO has sent to scientists A few seconds, and the show begins
  • SOHO - Solar and Heliospheric Observatory
    Above the surface is a region of hot plasma called the corona The corona is about 2 million K (3 6 million degrees F), much hotter than the visible surface, and it is even hotter in a flare Why the atmosphere gets so hot has been a mystery for decades; SOHO's observations are helping to solve this mystery
  • SOHO - Solar and Heliospheric Observatory
    SOHO is one of a number of satellites which measure the properties of particles in the solar wind Another, and much older, way to determine the composition of the Sun is through spectral analysis Every element will have characteristic wavelengths (colors) associated with it This is a result of quantum mechanics
  • SOHO_Fact_Sheet - Solar and Heliospheric Observatory
    SOHO, the Solar and Heliospheric Observatory, is a project of international cooperation between ESA and NASA to study the Sun, from its deep core to the outer corona, and the solar wind





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