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 Course Astronomy #6 　　The Gravity of the Situation: Crash Course Astronomy #7 　　Tides: Crash Course Astronomy #8 　　Introduction to the Solar System: Crash Course Astronomy #9 　　The Sun: Crash Course Astronomy #10 　　The Earth: Crash Course Astronomy #11 　　The Moon: Crash Course Astronomy #12 　　Mercury: Crash Course Astronomy #13 　　Venus: Crash Course Astronomy #14 　　Mars: Crash Course Astronomy #15 　　Jupiter: Crash Course Astronomy #16 　　Jupiter's Moons: Crash Course Astronomy #17 　　Saturn: Crash Course Astronomy #18 　　Uranus & Neptune: Crash Course Astronomy #19 　　Asteroids: Crash Course Astronomy #20 　　Comets: Crash Course Astronomy #21 　　The Oort Cloud: Crash Course Astronomy #22 　　Meteors: Crash Course Astronomy #23 　　Light: Crash Course Astronomy #24 　　Distances: Crash Course Astronomy #25 　　Stars: Crash Course Astronomy #26 　　Exoplanets: Crash Course Astronomy #27 　　Brown Dwarfs: Crash Course Astronomy #28 　　Low Mass Stars: Crash Course Astronomy #29 　　White Dwarfs & Planetary Nebulae: Crash Course Astronomy #30 　　High Mass Stars: Crash Course Astronomy #31 　　Neutron Stars: Crash Course Astronomy #32 　　Black Holes: Crash Course Astronomy #33 　　Binary and Multiple Stars: Crash Course Astronomy #34 　　Star Clusters: Crash Course Astronomy #35 　　Nebulae: Crash Course Astronomy #36 　　The Milky Way: Crash Course Astronomy #37 　　Galaxies, part 1: Crash Course Astronomy #38 　　Galaxies, part 2: Crash Course Astronomy #39 　　Gamma-Ray Bursts: Crash Course Astronomy #40 　　Dark Matter: Crash Course Astronomy #41 　　The Big Bang, Cosmology part 1: Crash Course Astronomy #42 　　Dark Energy, Cosmology part 2: Crash Course Astronomy #43 　　A Brief History of the Universe: Crash Course Astronomy #44 　　Deep Time: Crash Course Astronomy #45 　　Everything, The Universe...And Life: Crash Course Astronomy #46