ASTR BC 1753x Lecture Notes - Lecture 5: Orbital Period, Astronomical Unit, Semi-Major And Semi-Minor Axes
1 Sep 2016
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To when it starts repeating the same phase. The earth was located at the center of the entire universe. The tilt of the moon"s orbit relative to the earth"s orbit. The size of the moon shadow is too narrow to cover a large area over the u. s. Light from sun comes in with all the colors, but the blue light is preferentially scattered, and we see it with our eyes. Hw #2 is posted and due oct 1. Used to predict the position of the planets for 15 centuries. Predictive power on movement of any newly discovered planets. No stellar parallax observed yet = stars very, very far away. Observed a new star, now known as a supernova. Kepler changes the view of the universe based on. A single ellipse can predict the planets" positions better than the hundreds of epicycles. Somnium (the dream in latin) first science fiction of beings inhabiting the moon.
