Phases of the moon (video) | Khan Academy
https://www.khanacademy.org/science/middle-school-earth-and-space-science/x87d03b443efbea0a:the-earth-sun-moon-system/x87d03b443efbea0a:the-moon-and-its-motions/v/phases-of-the-moon
webThere are a total of eight moon phases: new, waxing crescent, first quarter, waxing gibbous, full, waning gibbous, third quarter, and waning crescent. These phases repeat every 29.5 days. Created by Khan Academy . animation
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