Physics 117 Chapter 4 A brief history of astronomy and Gravity.
Lecture 1 — Introduction to Astronomy (White Background)
Astro 10, 2003: Lecture 4 Why should you believe anything we’ve told you? Is the Earth really round? Does it spin on it’s axis? Does it really orbit the.
Astro 10: Lecture 4 Why should you believe anything I’ve told you? Is the Earth really round? Does it spin on it’s axis? Does it really orbit the sun?
Today is Tuesday, April 28 th, 2015 Pre-Class: Take a guess as to what year the telescope was invented. We’ll see who gets closest.
Physics 117
