TeachAstronomy.com is an astronomy learning tool, intended either as a supplement for classroom instruction or for informal learners wanting to know more about the subject.
Here you can watch video lectures on astronomy topics. Watch one of 29 individual playlists, or search for a specific topic.
Our first massive open online course is Astronomy: Exploring Space and Time, offered by Professor Chris Impey from the University of Arizona and Steward Observatory...
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