Hi, welcome to Futurepedia!Please log in to edit this wiki.Joining Wikia is free, and it only takes a minute.We hope that you sign in, and become a member of the community!Click here to join this wiki You can view and copy the source of this page. '''1643''' was a year in the [[17th century]]. ==Event== *'''Day Unknown, [[January 4]]''': [[Isaac Newton]] is born. [[Category:Years]] Return to 1643. Retrieved from "https://backtothefuture.fandom.com/wiki/1643"