Cycles in the Sky: Crash Course Astronomy, 3

This week we build on our naked eye observations from last week and take a look at the cyclical phenomena that we can see at work in the universe. Table of Contents: Naked Eye Observations 0:28. 4 Constellations 3:09. 7 The Color of Stars 2:44. 5 View of the Stars 7:25 PBS Digital Studios: Follow Phil on Twitter: Want to find Crash Course elsewhere on the internet Facebook Twitter