NEOWISE - The Comet & The Story of The Spacecraft Which Discovered It

Comet C/2020 F3 NEOWISE is now visible to observers in the Northern Hemisphere. You can see it in the twilight just before sunrise and now, just after sunset without any binoculars or telescopes, it's the best comet in over a decade.
However, the spacecraft which discovered it has a pretty amazing story, it was launched just over a decade ago, helped find 3 new stars close to the Sun, and a huge catalog of asteroids. After its primary mission ended it was reactived as an asteroid survey telescope and Comet NEOWISE is one of its discoveries.