NATS 1745 Midterm: Statements Exam Notes 1
14 Feb 2017
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William herschel was looking for a stellar parallax when he discovered uranus. Herschel was suited for discovering planets because he built one of the largest telescopes of his time in his backyard to observe the skies. Uranus revealed itself to herschel as a planet: when he i(cid:374)(cid:272)(cid:396)eased his teles(cid:272)ope(cid:859)s (cid:373)ag(cid:374)ifi(cid:272)atio(cid:374) u(cid:396)a(cid:374)us got la(cid:396)ge(cid:396) (cid:894)sta(cid:396)s (cid:396)e(cid:373)ai(cid:374) poi(cid:374)t-like in shape when magnified) & uranus moved relative to the stars rather than with the stars. Uranus was considered to be a planet because it has a near circular orbit while comets have an ellipti(cid:272)al o(cid:396)(cid:271)it. U(cid:396)a(cid:374)us(cid:859) (cid:374)a(cid:373)e o(cid:396)igi(cid:374)ates from the greek god of the sky (father of saturn & Kepler believed an undiscovered planet was in the large space between mars & jupiter. Bode(cid:859)s la(cid:449): o(cid:396)(cid:271)ital radii of 6 known planets followed a sequence of #s (sequences were (cid:272)lose to a(cid:272)tual dista(cid:374)(cid:272)es(cid:895). O(cid:374)e (cid:448)alue i(cid:374) (cid:271)et(cid:449)ee(cid:374) ma(cid:396)s & jupite(cid:396) did(cid:374)(cid:859)t appl(cid:455) to a pla(cid:374)et.
