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Tycho Brahe, De mundi aetherei recentioribus phaenomenis


Tycho Brahe (1546-1601)
De mundi atherei recentioribus phænomenis, Frankfurt, 1610
Florence, Istituto e Museo di Storia della Scienza, MED 1246, p. 189

Tycho reports the results of his research on the comet of 1577. Attempting to determine its distance from Earth, he reached the conclusion that it orbited around the Sun. The work also contains the first outline of the geo-heliocentric system that Tycho devised.