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23 things you didn't know about J.K. Rowling's 'Harry Potter' universe

INSIDER Logo By Jacob Shamsian of INSIDER | Slide 1 of 24: <p> J.K. Rowling's "Harry Potter" universe is enormous. And since closing the book on the main series in 2007, <a href="http://www.thisisinsider.com/jk-rowling-new-harry-potter-information-annoying-2016-8"> she keeps adding to it</a>. There are spinoff books, movies, and a play in the franchise - many of which reveal new insight about Harry, Ron, Hermione, and <a href="http://www.thisisinsider.com/harry-potter-character-name-meaning-2017-4"> other characters from the original series</a>.</p><p> The <a href="http://www.thisisinsider.com/harry-potter-trivia-2016-11">wealth of "Harry Potter" material</a> also means that there's a wealth of behind-the-scenes information that yields new details of how <a href="http://www.thisisinsider.com/jk-rowling-harry-potter-secret-book-birthday-dress-2017-7"> J.K. Rowling thought up the books</a>, <a href="http://www.thisisinsider.com/making-of-fantastic-beasts-and-where-to-find-them-2016-12"> how the filmmakers made the movies</a>, and a ton of other information about the "Harry Potter" universe. Rowling even launched Pottermore, which has become <a href="http://www.thisisinsider.com/jk-rowling-new-harry-potter-information-annoying-2016-8"> a sort of ever-evolving encyclopedia of trivia and back-stories</a> from her world. </p><p> It's a lot to keep up with. But for "Harry Potter" fans, all of it is fascinating.</p><p><strong>Here are 23 things you probably didn't know about J.K. Rowling's "Harry Potter" universe:</strong></p>

J.K. Rowling's "Harry Potter" universe is enormous. And since closing the book on the main series in 2007, she keeps adding to it. There are spinoff books, movies, and a play in the franchise - many of which reveal new insight about Harry, Ron, Hermione, and other characters from the original series.

The wealth of "Harry Potter" material also means that there's a wealth of behind-the-scenes information that yields new details of how J.K. Rowling thought up the books, how the filmmakers made the movies, and a ton of other information about the "Harry Potter" universe. Rowling even launched Pottermore, which has become a sort of ever-evolving encyclopedia of trivia and back-stories from her world.

It's a lot to keep up with. But for "Harry Potter" fans, all of it is fascinating.

Here are 23 things you probably didn't know about J.K. Rowling's "Harry Potter" universe:

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