SpaceWeather.com
COMET TOAST: The solar system has one less comet. The subtraction occurred yesterday when a bright comet discovered by NASA's STEREO-A spacecraft plunged toward the sun and evaporated. The Solar and Heliospheric Observatory (SOHO) had an excellent view of the encounter. Click on the image to set the scene in motion:
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One "
dirty snowball" went in; none came out. The doomed comet was a member of the Kreutz sungrazer family. Named after a 19th century German astronomer who studied them in detail, Kreutz sungrazers are fragments from the breakup of a giant comet at least 2000 years ago. Several of these fragments pass by the sun and disintegrate every day. Most are too small to see but occasionally a big fragment--like
this one--attracts attention.
Credit: The comet was found on Jan. 2nd by Australian amateur astronomer Alan Watson, who was inspecting images obtained by STEREO-A's Heliospheric Imager on Dec. 30, 2009.
