The internet's encyclopedia of speed
Explainers
The rankings answer who is fastest. These pages answer why the number means what it means, with the source named and a door back into the list.
- Explainer
How fast is the speed of light?
The metre is defined from an exact speed. The number is not a measurement that can come out a little high.
- Explainer
Why do cheetahs tire so fast?
The popular story says a cheetah quits because it overheats. A biologging study of free-living cheetahs did not find that.
- Explainer
How Nürburgring laps are timed
A Nordschleife time is a flying lap of a specific finish line. Two layouts that share a name are not one ranking.