What happened to the last protagonist in Interstellar?

After the protagonist was released from the five-dimensional space, he fell into a coma and floated into space. The human spaceship found him and rescued him. Because my daughter worked out the gravity formula, people can leave the earth and live in a space station built on Mars. Brand came to Edmonton alone and started Plan B. As a result, Matthew planned to find Brand. From her daughter's words, it is obvious that Edmonton will become a new immigrant land for mankind.

This movie is really lazy, and it is also the place that many people don't understand the most. He didn't return to earth. If you remember, he met Dr. Brand when he was released from the five-dimensional space. In fact, this is what Brand said about the handshake when they entered the wormhole. Therefore, it is speculated that he was released from the five-dimensional space and was released to a place close to humans through a wormhole. Murphy received information from higher dimensions, worked out a formula to overcome the gravity of the earth, established a space station, and later found Cooper. Of course, the middle film doesn't explain it. The place where Cooper woke up was not the earth, but the space station built by Murphy on Saturn.

The end of the interstellar is what human beings look like.

The ending is very open. When the hero wakes up, it directly shows the situation inside the space station. The space station on Saturn is inhabited, and the heroine smiles at the planet where her ex-boyfriend died, which indicates that she has found a planet to live on. Plan B can be realized, and the goal is to find a planet suitable for survival. Plan a is to transfer people before the extinction of human beings on earth. Plan B is to take 500 fertilized eggs to another planet to start civilization, and the hero will continue to look for the heroine at last. The film is over. There is no mention of what happened to people on earth, whether the only people left in the space station died or continued to linger, and whether humans began to multiply on another planet. In fact, besides science, the core of movies is that "it is not science but love that saves mankind".