Comets

The video explores the nature and history of comets, their composition, and behavior as they approach the sun. It explains the formation of comet tails and their characteristics, discusses comet orbits and lifespan, and introduces the concept of the Oort Cloud. The video also covers missions that have studied comets up close, revealing their structure and composition. Finally, it considers the role of comets in Earth's history, including their potential contribution to the origins of life.

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