The European Space Agency’s SOHO (Solar and Heliospheric Observatory) satellite returned this image today of the sun, taken in ultraviolet light at one-million-degree temperature wavelengths. Bright, twisted areas are regions of hotter storminess while darker spots are cooler zones called coronal holes.
The SOHO satellite is positioned in orbit around the sun just inside Earth’s orbit, 932,000 miles away from our planet. It monitors the solar “weather”, constantly observing the sun’s surface features, solar wind and interior temperatures. It sends back daily images taken in different wavelengths which are posted on the ESA’s SOHO mission page.
The mission, launched in 1995, is a joint collaboration of ESA and NASA.
Image credit: ESA/NASA