• episode “#20” • Crash Course Astronomy Now that we’ve…
• episode “#19” • Crash Course Astronomy Today we’re rounding…
• episode “#18” • Crash Course Astronomy Saturn is the…
• episode “#17” • Crash Course Astronomy Before moving on…
• episode “#16” • Crash Course Astronomy Jupiter is the…
• episode “#15” • Crash Course Astronomy The fourth planet…
• episode “#14” • Crash Course Astronomy Venus is a…
• episode “#13” • Crash Course Astronomy Mercury is the…
• episode “#12” • Crash Course Astronomy Join Phil for…
• episode “#11” • Crash Course Astronomy Phil starts the…
