2. Wormhole: Wormhole was proposed by Einstein and Nathan Rosen in 1930. It is considered that wormholes are narrow tunnels (white holes and black holes) that may exist in the universe and connect two different time and space. People think that it is possible to carry out instantaneous space transfer or time travel through wormholes.
According to our physical knowledge, black holes and wormholes should be invisible, but black holes in movies can be seen. As a scientific adviser to Interstellar, Kip Thorne published two papers on "black hole visualization" and "wormhole visualization" in Interstellar. So when we are still wondering about the fabrication in the film, physicists have given the answer.
Third, the theory of time relativity: As the main characters in the film, they went to Miller's planet because they have been receiving Miller's signals. By the time they came back, it had been more than 20 years in Romilly. It has been calculated before that an hour on Miller is seven years on Earth.
According to Einstein's theory of relativity, the scales of space and time change with the speed of the observer. Because the huge speed will slow down the time of the spacecraft and all the objects inside. That is to say, the clock of the spacecraft went once, and the clock on the earth turned many times. At the same time, besides speed, gravity will also affect time, so Romilly has spent more than 20 years when the protagonist parked his flying car on Miller.
Hypercube: After leaving the spaceship, the protagonist in the film does not fall into a black hole, but enters a box that quantifies time, that is, a five-dimensional space, so the protagonist transmits data to his daughter in a three-dimensional space through this box. Finally, he solved the equation and led everyone to build a colonial space station on Saturn.
This box is the creation of super civilization, which embeds time as a dimension into a cube. A "face" of this hypercube is in a three-dimensional space, but the space-time we live in in real life is a four-dimensional space, and we can only perceive three-dimensional space and linear time dimension. Five-dimensional space-time is a four-dimensional space plus a nonlinear time dimension, and that time dimension can easily make Cooper influence the past through gravity, and finally manipulate the hands of the watch through gravity to transmit the key information of quantum gravity to his daughter's world, and finally enable human beings to manipulate gravity to leave the earth.