Astronomy 2022A/B Lecture Notes - Lecture 1: Edwin Hubble, Deferent And Epicycle, Roland Jupiter-4

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Science needs observable physical data: revision is what makes science different from other approaches. Supreme being if it cant answer it. Flat earth a common misconception for early cultures. Though aristotle believed earth was round, incorrectly believed in a geocentric model. If the earth moved, we would always be hearing a howling wind: planets all moved at different rates, were on different rotating spheres (he believed, pla(cid:374)ets are k(cid:374)o(cid:449)(cid:374) as (cid:858)(cid:449)a(cid:374)derers(cid:859) Ptolomy: belie(cid:448)ed i(cid:374) aristotle(cid:859)s theor(cid:455) that the su(cid:374), (cid:373)oo(cid:374), a(cid:374)d pla(cid:374)ets (cid:272)ir(cid:272)led the earth. Ptolemy felt that a new theory (cid:449)as (cid:374)eeded to fi(cid:454) this pro(cid:271)le(cid:373). (cid:863) I(cid:374) (cid:1005)57(cid:1006) he (cid:449)as a (cid:271)rillia(cid:374)t (cid:858)(cid:374)e(cid:449) star(cid:859) a(cid:374)d (cid:272)alled it a super(cid:374)o(cid:448)a, dis(cid:272)o(cid:448)ered a se(cid:272)o(cid:374)d o(cid:374)ei(cid:374) 1604: undermined the ptolemaic and aristotle idea that outer space (where all the stars were) was unchanging. Just pissed off the pope by making him sound dumb in a book had to recant his statements.

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