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What are the best online sources for learning about astronomy?
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The best online resources for learning about astronomy include websites such as NASA's Astronomy Picture of the Day, Space.com, and HubbleSite.org. Additionally, you can find a wealth of information on various astronomy blogs and forums. There are also numerous YouTube channels dedicated to astronomy that provide great visuals and explanations. Finally, there is an abundance of educational apps available for smartphones and tablets that can be used to explore topics in more depth.