Centaurs: NASA's WISE finds mysterious centaurs may be comets

[unable to retrieve full-text content]The true identity of centaurs, the small celestial bodies orbiting the sun between Jupiter and Neptune, is one of the enduring mysteries of astrophysics. Are they asteroids or comets? A new study of observations from NASA's Wide-field Infrared Survey Explorer (WISE) finds most centaurs are comets.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/space_time/astronomy/~3/ljMY35HO7lY/130725151523.htm

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