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In 350 BCE, Aristotle added even more evidence. Observe ships on the horizon Way back in 350 BCE, Aristotle saw evidence for the curve in the disappearing hulls of ships as they sailed away. You can look out for its curve yourself during the next eclipse. The first written evidence that Earth was a globe comes from Empedocles and Anaxagoras in around 430 BCE, both of whom noticed Earth’s shadow appeared rounded during a lunar eclipse. Observe Earth's shadow during a lunar eclipse During an eclipse, Earth casts a circular shadow on the Moon, not an oval – something astronomers in the 5th century BCE knew suggested a spherical world

Unfortunately, though there is much evidence of ancient India’s extremely advanced knowledge of astronomy, there is little surviving record of their methods.įor that, we must turn to the Greek ‘natural philosophers’. The Rigveda, first composed between 15 BCE, includes the verse 'In the midst of the Universe, the spherical Earth stays'. During a lunar eclipse, we can see Earth's shadow is round. The total lunar eclipse of 8 November 2022 captured by Soumyadeep Mukherjee, Kolkata, India. Apollo moonlanding conspiracy theories debunked.

The first known reference to a round Earth is in ancient Indian religious texts. It’s a common line to hear: "500 years ago, they thought that Earth was flat!" But it’s also completely untrue.Īstronomers have been able to prove our planet is a globe for well over 2,000 years, using methods you can recreate at home. 5 ways we can prove Earth is round, not flat