Blue Sun Glaring . ... Credit Copyright: EIT , SOHO , ESA , NASA Explanation: The Sun is a bubbling ball of extremely hot gas. ... This picture was taken in ultraviolet (extremely blue) light by the Extreme-ultraviolet Imaging Telescope (EIT) on board the Solar and Heliospheric Observatory (SOHO) spacecraft, which is orbiting the Sun just ahead of the Earth , at the L1 point . SOHO was launched in 1995 and will continually monitor the Sun for several years. ... NASA Official: Jay Norris. ...