The Kessel Run

Classical Mechanics Level 1

Han Solo boasts that the Millennium Falcon made the Kessel run in fewer than 12 parsecs, causing Star Wars fans worldwide to think that parsecs are a measurement of time.

In truth, parsecs are a measurement of what quantity?

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.