Scientifically accurate

Speaking of keeping things real, Nolan was determined to ensure 'Interstellar' was as scientifically accurate as possible.

Dr. Kip Thorne – who is an expert on space – was brought on to collaborate with visual effects supervisor Paul J. Franklin, and brought with him countless pages of theoretical equations of what a black hole was like.

These equations were then used to create a new CGI software to simulate these phenomena.

Other than black holes, Dr. Thorne oversaw other aspects of the movie to ensure everything that happened on-screen could occur in real life.

The only time the scientist had any pushback from Nolan was about space travel as the director was initially determined to let spaceships travel faster than the speed of light.

Luckily, the expert managed to talk the filmmaker out of it, meaning that 'Interstellar' is one of the most scientifically accurate movies to date.