Usain Bolt cemented his status as The World’s Fastest Man in the 100m final at the Beijing Olympics. Bolt’s record setting time of 9.69 was .003 seconds faster than the mark he set in May, and it could have been better if Usain hadn’t slowed down to glorify himself the final 20 meters.

Physicist from the Institute of Theoretical Astrophysics at the University of Oslo decided to take on the task of figuring out exactly how fast Usain Bolt could have run. The physicist analyzed position, speed, and acceleration using footage of Bolt and runner-up Richard Thompson. Read the full story