What is the end of the interstellar?

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".