After 20 years in space, ESA and NASA’s Solar and Heliospheric Observatory, or SOHO, is still going strong. Originally launched in 1995 to study the sun and its influence out to the very edges of the solar system, SOHO revolutionized this field of science, known as heliophysics, providing the basis for nearly 5,000 scientific papers. SOHO also found an unexpected role as the greatest comet hunter of all time—reaching 3,000 comet discoveries in September 2015.
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NASA ID
GSFC_20151201_SOHO_m12052_20th
Date Created
December 1, 2015
Center
GSFC
Media Type
video
Location
Goddard Space Flight Center
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![What is a Sungrazing Comet? [hd video]](/_next/image?url=https%3A%2F%2Fimages-assets.nasa.gov%2Fimage%2FGSFC_20171208_Archive_e001302%2FGSFC_20171208_Archive_e001302~thumb.jpg&w=1920&q=75)