What is a Comet?

The Rosetta Mission Asks: What is a Comet? Scientists attempt to answer these questions and more as the Rosetta Mission's Orbiter arrives and escorts comet 67/p Churyumov Gerasimenko into our inner solar system.

Related:

- ESA Releases Stunning New Images of Comet 67P/Churyumov-Gerasimenko

- Rosetta Arrival at Comet 67P/Churyumov-Gerasimenko Revealed Highlights [6 videos]


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