Welcome to school without the classroom! Join host Phil Plait and discover everything there is to know about the cosmos. Episodes include… Introduction to Astronomy: Crash Course Astronomy #1 Naked Eye Observations: Crash Course Astronomy #2 Cycles in the Sky: Crash Course Astronomy #3 Moon Phases: Crash Course Astronomy #4 Eclipses: Crash Course Astronomy #5 Telescopes: Crash ...