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Apr 8, 1000
ptolemy
though that the earth was center -
Period: Apr 8, 1000 to
times it happens
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Apr 8, 1543
copernicus
found that the sun was center -
Apr 8, 1572
brahe
earth and sun in the middle -
keplar
the earth was olimaclar in orbit -
Galileo
improved the telescope and thermometer -
