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  SOHO sees eruptive prominence
SOHO sees eruptive prominence
Image credit: ESA/NASA

Uploader comment: On Friday, 12 March 2004, the Sun ejected a spectacular 'eruptive prominence', or mass of relatively cool plasma, into the heliosphere. Relatively cool, because the plasma observed by the Extreme-ultraviolet Imaging Telescope (EIT) on board the Solar and Heliospheric Observatory (SOHO) was only 60 000 - 80 000 degrees Celsius, unlike the 1.5 - 2 million degrees Celsius plasma surrounding it in the Sun's tenuous outer atmosphere, or 'corona'.


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July 2, 2011, 5:45 am
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