The heliocentric system of the world: from Aristarchus to Newton
For the first time, the idea that the Earth revolves around the Sun arose in the minds of ancient Greek
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Planet
Facts about all 8 Planets
Our solar system consists of the sun and all of its orbiting objects. Orbiting objects include: the planets and their
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Kepler’s Laws on the Movement of the Planets
Astronomy was of interest to Kepler from an early age, but smallpox transferred in childhood hit the future scientist’s eyes
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Measuring the radius of Earth in Km
In ancient times, people imagined our planet in different ways: the inhabitants of Babylon believed that they lived on one
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