Back to the Future: Does physics of Marty's time travel add up

Today is 21 October 2015 – the date Marty McFly and Doc Brown travel to in Back to the Future Part II. Can we reconcile the films with reality?

Back to the Future: The Ultimate Trilogy - Blu-ray + Digital : Michael J. Fox, Christopher Lloyd, Lea Thompson, Thomas F. Wilson, Crispin Glover, Casey Siemaszko, Mary Steenburgen, Claudia Wells, Billy

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The Physics of Back to the Future, by Ethan Siegel, Starts With A Bang!

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