Word: tycho
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Dates: during 1970-1979
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...Middle Ages, Copernicus displaced earth from its position at the center of the solar system. But Aristotle's thinking continued to dominate astronomy until 1572, when Tycho Brahe observed a bright new star (which scientists now know was a supernova, or exploding star) near the constellation Cassiopeia. Beyond any doubt, it had not previously been visible. Other blows to Aristotelian cosmology followed swiftly. By early in the 17th century, Galileo had used his telescope to discover spots on the sun−demonstrating that the solar complexion was somewhat less than perfect−and to prove that...