But if the Earth was flat, their shadows would be the same.Įratosthenes, who conducted a version of this experiment, knew this 3,000 years ago 3. If you get two people at different distances from the equator, and they measure their shadows at the same time, their shadows will be different lengths. Look downĪn equally straightforward way to prove the Earth is not flat is to simply measure your shadow. If the Earth was flat, everyone would be able to see the same constellations.

Someone in Australia will see a different sky to someone in England at night - for example, you can't see Polaris, the North Star, from the southern hemisphere. When you look up at the night sky, you can only see certain constellations from certain points on Earth. So, with everyone staying inside over the course of the Covid-19 pandemic, we thought it was the perfect time to compile the ways you can prove that the Earth most definitely a globe. But a very, very small minority of us cling inexplicably to the idea of a flat Earth. Pretty much everyone knows the Earth is a globe.

Flat earth proofs