We Talk A Lot About Speed.

We sometimes use the phrase “as slow as a snail.”

British spelling.

The common garden snail has a top speed of roughly 1 metre per hour; if it obtained that speed in a straight line for about 40 days, it would have travelled roughly 1 kilometre.

The Jamaican sprinter Usain Bolt achieved the fastest running speed of any human; for a few seconds, he reached a top speed of over 44 kilometres per hour.

The African cheetah has the fastest speed of any land animal; during a chase, it can reach a speed of over 120 kilometres per hour.

As of 2023, the SSC Tuatara is arguably the world’s fastest production car; it can achieve a top speed of 316 kilometres per hour.

In a dive, the Peregrine Falcon can reach an incredible speed of over 320 kilometres per hour.

Now we will ramp up the speed. The Lockheed SR-71 Blackbird aircraft can fly at over 3,500 kilometres per hour.

To escape the Earth’s gravitational pull and travel on through space, a spacecraft needs an escape velocity of about 40,000 kilometres per hour.

In November 2021, the fastest speed of any spacecraft was achieved by the Parker Solar Probe. It reached an incredible speed of almost 587,000 kilometres per hour as it came close to the sun in its elliptical orbit.

We think some of those speeds are very fast, but in reality, they are not. All of them pale into insignificance when we think of the maximum speed possible in the universe. That speed is 1,080 million kilometres per hour, the speed of light.

You may find some of my easy-to-understand stories about the universe and life interesting and educational. Enjoy