National Geographic Daily News

Comet Tempel 1

Photograph courtesy NASA, ESA, P. Feldman (Johns Hopkins University) and H. Weaver (Johns Hopkins University Applied Physics Laboratory)

Light reflects from the nucleus of the Tempel 1 comet in this Hubble Space Telescope image taken in 2005. The potato-shaped nucleus, which appears starlike because it's too small for Hubble to resolve, is 8.7 miles (14 kilometers) wide and 2.5 miles (4 kilometers) long.

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