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?

Codes & Conventions of Time Travel Sci-fi

Back to the Future (creative franchise): What are some of your favourite BTTF time related oddities/changes that occur through the film? - Quora

Marty McFly Time-Traveled to This Week. Did 'Back to the Future' Get It Right?

10 of the best time travel movies ever made according to a director at the Centre for Time

Where are we with time travel?

Back To The Future' Trilogy Getting Fantastic Box Set

Scientists explain how time travel could be possible – but only in one direction - Daily Star

Philosophies, Free Full-Text

Is time travel possible?

Back to the Future I, II & III: About these classic time travel movies, plus see the original trailers - Click Americana

Back to Back to the Future

The Future is Back: Revisiting 'Back to the Future' - PopOptiq

In Back To The Future, time can be bent, but never broken / The Dissolve