AST101H1 Lecture Notes - Lecture 5: Angular Diameter, New Moon, Supermoon
19 Oct 2017
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On tuesday, we were talking about how the earth is rotating on its axis, tilting over the sun, goes around the sun. When the sun is all the way down on the southern hemisphere, on december 21st, it is summer on the southern hemisphere. On this day, if you look straight up at noon, you can see the sun. Hence, the earth is rotating around this axis. As time goes by, six months later, or six months earlier, the sun will be shining directly straight above the equator. So if (cid:455)ou"(cid:396)e at the e(cid:395)uato(cid:396) at noon, and (cid:455)ou look st(cid:396)aight up, you can see the sun. If (cid:455)ou"(cid:396)e at the south pole, (cid:455)ou (cid:272)an see the sun (cid:396)ight at the ho(cid:396)izon. Spring, or the first day of fall, the sun will be rising and setting at the north pole or the. Therefore, the earth is spinning, tipped, as it goes around the sun.
