![]() ![]() Many of our observations in geology, such as plate tectonics, are not explained by a flat Earth.Ī spherical Earth is also a fundamental fact of navigation.Īnd of course we have many photographs of a spherical Earth from space. The shape of Earth explains seasons, changes in weather, how the sun sets and many more natural phenomena. We now know that if the Earth were a flat disc instead of a sphere, gravity would also tend to pull people at the edges inwards towards the centre, not just down towards the surface-with all sorts of strange effects that we do not observe. The Greek mathematician Eratosthenes and the Roman-Greek-Egyptian mathematician Ptolemy were able to estimate the circumference of the Earth quite accurately, by measuring the angle of the sun in different places at the same time. The recent impeachment hearings were like a debate over whether the earth is flat, the Democrats arguing that the earth is round and the Republicans arguing that the earth is flat. Indeed people were able to demonstrate this in several ways more than two thousand years ago.Īristotle, for instance, observed that the Earth’s shadow on the moon during a lunar eclipse is always circular. ![]() There are many ways to prove that the Earth is spherical. You can help us take action – and get our regular free email ![]()
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