Earth's place in the universe | Middle school Earth and space science | Khan Academy

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https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:earth-in-space/x87d03b443efbea0a:earths-place-in-the-universe/v/earths-place-in-the-universe

Early astronomers developed the geocentric model to describe Earth's place in the universe. In this model, Earth is at the center of the universe. Later, the geocentric model was replaced by the heliocentric model. In this model, the sun is at the center of the universe.

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Видео Earth's place in the universe | Middle school Earth and space science | Khan Academy канала Khan Academy