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?

How Time Travel Works (and doesn't) in Back To The Future [BTTF Week] - Overthinking It

The Science of Back To The Future [BTTF Week] - Overthinking It

Follow Along: It's Back to the Future Day

The Grandfather Paradox:. Why Changing the Past Will Not Alter…, by Michael Franzblau PhD, The Parallax

Time travel, Futurepedia

Best Time Travel Movies: 'Groundhog Day' 'Hot Tub Time Machine,' More – IndieWire

What's your favorite time-travel logic? : r/sciencefiction

Back to the Future with MARTY!

TIL that Carl Sagan considered Back to the Future 2 the greatest time travel movie ever made, due to the movie's accuracy in handling the multiple timelines. : r/todayilearned

If Back to the Future isn't an accurate time travel movie, then what is? - Quora