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In July 2005, NASA's Deep Impact probe collided with comet Tempel 1, providing the first-ever glimpse of the interior of one of these "dirty snowballs" and valuable insight into the formation of our solar system.

Watch the full Comet Collision! movie online at no cost in high-definition (HD) quality. No downloads needed—simply click to play and experience the excitement with English subtitles included for your convenience.