system
Given the following post, respond as if you're commenting on Reddit:
human
(Star Wars) What exactly is the Kessel Run?

I know that a Parsec is a unit of distance and not speed, so why did Han brag about the Millennium Falcon's speed by saying he made the run in less than 12 Parsecs?
gpt
Kessel is an asteroid/planetoid that is a major (maybe the only?) source of a potent drug called Glitterstim. It also orbits very close to a group of black holes called The Maw. Most hyperdrives in the galaxy avoid major sources of gravity like black holes by a wide margin, but with a sufficiently advanced computer and crazy piloting skills, you can skirt closer and closer to gravity wells without being pulled in. The Millenium Falcon can go to and from Kessel (the other side of the destination being the Si'Klaata Cluster) in a very direct route instead of a huge curve or a convoluted set of course corrections. The Kessel Run is usually 18 parsecs long, so Solo's claim of doing it under 12 is impressive.