On March 22, 2004, the ESA/NASA SOHO solar observatory spacecraft observed its 750th comet since its launch in late 1995. SOHO has a special instrument that blocks out the glare of the Sun, and allows it to see comets that graze the Sun. Amateur astronomers from around the world analyze the photographs taken by SOHO, which are published on the Internet - more than 75% of the discoveries have been made by amateurs. This one was discovered by Sebastian H?nig from Germany.