Ancient Greek astronomers were the first to gather knowledge about space exploration. Richard Branson and Jeff Bezos could ...

50 comments telling me the earth is Flat. And hence, it’s compelled me to make a short video, with a history spin, because this is a belief that was meant to have died out more than 2,000 years ago.

Eratosthenes’ calculation of the Earth’s circumference was approximately 40,000 kilometers, which is remarkably close to the modern measurement of 40,075 kilometers. His work laid the foundation for ...

Katherine Dunn is a journalist based in London. Her book on the history of GPS will be published in 2026. Some time around 250 BC, Eratosthenes – a Greek poet, mathematician and chief librarian ...

At midday, it cast a shadow. Eratosthenes measured it. Knowing (or least hearing) there was no shadow at midday in Syene, Eratosthenes did some fancy math (without a calculator!) and came up with a ...

Eratosthenes’ figure for the circumference of the earth at the equator was not the only figure mooted by scholars before Strabo. Lower figures were also doing the rounds. Posidonius, at work some ...

The third century BCE scholar Eratosthenes even had a reasonably accurate stab at measuring its circumference. ... Flat Earth, the History of an Infamous Idea, Christine Garwood, Pan 2007.

By this means he found that the circumference of the earth was 250,000 stadia, according to Cleomedes, ... Nature - Eratosthenes and the Circumference of the Earth. Skip to main content.

More than 2,000 years ago, the Greek philosopher Aristotle and the mathematician Eratosthenes used fairly simple observations and uncomplicated arithmetic to determine that the Earth is round and ...

Eratosthenes, in the third century BC, became the first person to calculate the circumference of the Earth, with further geometric calculations performed by Islamic scholars in later centuries.