Wikipedia's logo is seen on a tablet screen on Dec. 4, 2012 in Paris.
Lionel Bonaventure—Getty Images
January 14, 2016 5:52 PM EST

TIME takes a look back at the revolutionary online encyclopedia’s milestones in the 15 years since its first entry.

This article has been updated from its original publication date, Jan. 13, 2011, Wikipedia’s 10th anniversary.

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