Blue Sun

Blue Sun Glaring.

A false-color picture of our Sun, taken by the Extreme Ultraviolet Imaging Telescope (EIT) on board the Solar and Heliospheric Observatory (SOHO) spacecraft. Light blue regions are extremely hot, flying over one million degrees, while dark blue regions are slightly cooler. The camera filter used was sensitive to the emission of high-charged iron ions. Each feature of the image thus traces the magnetic field structure of the sun. SOHO is orbiting the Sun just ahead of the Earth, at the L1 point. It was launched in 1995 and will continually monitor the Sun for several years.

w.wu 2000-2005