The discovery in AD 2668 of life on Pluto brought about humanity's greatest re-evaluation of its place in the Universe since the time of Copernicus, more than a thousand years before. It was Nicolaus Copernicus (1473-1543) whose astronomical calculations overthrew the ancient Ptolemaic theory of the heliocentric Solar System and demonstrated that the Earth was not the centre of the Universe but actually moves in orbit around the Sun.
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