| Solar prominence,ultraviolet SOHO (Solar and Heliospheric Observatory) satellite image. The prominence (top right),is a dense cloud of plasma,or ionised gas,erupting from the chromosphere (orange). Prominences are typically at temperatures of 60,000 Kelvin,much cooler than the several million Kelvin of the surrounding corona (red). Active regions (white) mark areas of high solar activity. The Sun's activity peaks every 10-11 years. Image produced by SOHO's Extreme Ultraviolet Imaging Telescope (EIT) on 14th September 1999 | |
| Lizenzart: | Lizenzpflichtig |
| Credit: | Science Photo Library / ESA / NASA / SOHO-EIT |
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