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Photons
It can take a photon 40 000 years to travel from the core of the sun to its surface, but only 8 minutes to travel the rest of the way to Earth.
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Nikola Tesla’s birth
There was a fierce storm that raged over the town on the night Nikola Tesla was born. It was told it is a bad omen to which Tesla’s mother replied: “No. He will be a child of light.”
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Planets
Uranus is the only planet in our solar system that rolls on its side like a barrel, while Venus is the only planet that spins in the opposite direction to Earth.
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The first robot
The first known robot to be built was a steam-powered “pigeon”, created around 400 to 350 BCE by the ancient Greek mathematician Archytas.
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Radio waves
Radio waves are a form of electromagnetic radiation – the same phenomenon as light, X-rays and various other types of radiation, but with much longer wavelengths. They travel at the speed of light 300 000 km/second.
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Everage cloud’s weight
Researchers have calculated that the average cumulus cloud you see on a sunny day – weighs an incredible 500 000 kg