PrimeWire

You can now watch the entire Comet Collision! movie online in high-definition quality, complete with English subtitles for a better viewing experience. Best of all, there’s no need to download anything—simply stream it directly from your device anytime, anywhere.

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.