(planets move faster when closest to the sun)3rd: Inequality of seasons (earth moves faster in winter) (p^2=a^3)An asteroid with an orbital period of 8 years lies at an avg distance from the sun equal to 4 AU’sAn 8 meter telescope has 16 times the light collecting area of a 2 meter telescope4. The Sun and Seasons (for finding rise/set, find where it usually would be, and that’s the middle)•Perihelion (Near sun) Aphelion (Far from sun)•In general, the sun rises in the east and sets in the westoSummer (June) solstice: when the Northern Hemisphere is tipped most toward the Sun (rises due north)oWinter (December) solstice: the Northern Hemisphere is tipped most away from the Sun (rises due south)oSpring (March) equinox: Northern Hemisphere starts to be tipped toward the Sun (rises due east)oFall (September) equinox: Northern Hemisphere starts to be tipped away from the Sun (rises due east)5. Eclipses•Umbra: Total Shadow, Penumbra: Partial shadow•
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