Tag: circumference of the Earth

In the mid-20th century, we began launching satellites into space to accurately determine the circumference of the Earth: 40,030 km. However, more than 2,000 years prior, a man in ancient ...

Over 2,000 years ago, an ancient scholar used a stick to calculate the approximate circumference of the Earth with an accuracy of 99%.Around 2,240 years ago, a scholar named Eratosthenes ...