SortStack #1968 — 2031-10-29

By speed · Order from slowest to fastest.

1. A crawling baby 1.4 km/h

   Babies often invent their own crawling styles, from the classic hands-and-knees to a one-legged commando shuffle.

2. A galloping zebra 66 km/h

   No two zebras have the same stripe pattern, which may help them recognise each other and confuse biting flies.

3. A racing greyhound 76 km/h

   Greyhounds reach their top speed in just a few strides and spend much of a sprint completely airborne.

4. A galloping wildebeest 92 km/h

   Over a million wildebeest migrate in a giant loop each year, a journey so vast it is visible from space.

5. A luge slider 140 km/h

   Luge athletes steer a tiny sled with subtle leg and shoulder pressure while lying on their backs, feet first.

6. NASA's Parker Solar Probe 692K km/h

   The fastest human-made object ever, it slingshots around the Sun, dipping into the star's blazing outer atmosphere.

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