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How big is the biggest star?

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Have you ever looked up at the stars and felt small? Have you ever looked at the Moon and thought, "Wow! It looks huge!"? This video gives us perspective on those questions.


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There is a theory which states that if ever anyone discovers exactly what the Universe is for and why it is here, it will instantly disappear and be replaced by something even more bizarre and inexplicable.There is another theory which states that this has already happened.
Douglas Adams, Author of "The Hitchhiker's Guide to the Galaxy"
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Avatar for R Kaplan
R Kaplan
Lesson Creator
Newtown, CT, United States
The Size of the Milky Way
Is our galaxy a big galaxy?
07/31/2013 • 
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 / 73 Updates
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TED-Ed Best of Web are exceptional, user-created lessons that are carefully selected by volunteer teachers and TED-Ed staff.

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