NATS 1745 Lecture Notes - Lecture 6: Geocentric Model, Rudolphine Tables, Tychonic System
3 Jan 2018
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It followed the stars annual motion: this suggested that this star like object was located in the celestial orb containing the stars. And that the orb of stars is not eternally unchanging: he proved that temporary events can occur in the heavens, that stars can appear and disappear. Saturn (saturn was believed to be the furthest star in the furthest orb: tycho"s failure to detect stellar parallax made him reject the idea that the earth orbited around the sun. This idea was popularly accepted in tycho"s time: tycho proved this wrong through the 1577 comet. He measured the comet"s distance from its parallax: the comet appeared to have shifted relative to the background stars. It lead him to suspect that theyre celestial. Bc if they were only atmospheric, then why would their tails be affected by the suns position: truth: sun produces a solar wind which pushes particles away from it.
