Pale Blue Dot: A Vision of the Human Future in Space
Briefly describe the progress made to undermine the geocentric theory.
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Copernicus produced the first systematic observations of the planets that suggested that they move around the Sun and not the Earth. Galileo confirmed these observations and discovered the existence of moons around other planets. For his outspoken opposition, he was put under house arrest. Newton provided the physical laws that could explain planetary motion and James Bradley's "aberration of light" conclusively proved that the Earth moves.