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Published online 14 December 2001 | Nature | doi:10.1038/news011220-5

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Space probe shows comet sense

Deep Space 1 reveals Borrelly's dark secrets.

Astate-of-the-art space probe has shed new light on what may be the darkest object in the Solar System.

The potato-shaped comet Borrelly, although less showy than its better-known cousin Halley, is turning out to be something of an enigma, researchers told this week's meeting of the American Geophysical Union in San Francisco.

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