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Learn about the history and measurement of Earth's circumference, from ancient times to modern geodesy. Find out the values of the equatorial and polar circumference, and how they are used to define units of length.
Learn about Earth's circumference, which is 40075.017 km at the equator and 40007.86 km along the meridians. Find out more about Earth's physical characteristics, atmosphere, life, and history on Wikipedia.
6 Ιουλ 2021 · Learn how Earth's radius, diameter and circumference are measured, and why the planet is flattened at the poles. Compare Earth's size to other planets and see how it has changed over time.
25 Απρ 2017 · Learn how Erastosthenes used shadows and stadia to estimate the Earth's circumference in ancient times. Find out the current value, the difference between equatorial and polar circumference, and other facts about Earth's size and shape.
From an average distance of 93 million miles (150 million kilometers), Earth is exactly one astronomical unit away from the Sun because one astronomical unit (abbreviated as AU), is the distance from the Sun to Earth.
1 ημέρα πριν · Learn about Earth, the third planet from the Sun and the only place in the universe known to harbour life. Find out its size, composition, temperature, mass, and more facts from Britannica.
24 Δεκ 2015 · Learn the equatorial and polar circumference and diameter of the Earth, and how they differ due to the Earth's rotation. Find links to more articles and podcasts about Earth.
