What does the end of Interstellar mean?

Interstellar ended with Dr. Brand Jr. arriving at the planet where her lover Edmund first landed.

Synopsis: In the near future, with the deterioration of the earth's natural environment, human beings are facing the threat of being unable to survive.

At this time, scientists found a wormhole near Saturn in the solar system. Through this wormhole, we can break the limitation of human ability and look for opportunities to continue life in further outer space. An expedition crossed the solar system through this wormhole, and their goal was to find a planet suitable for human migration.

The meaning of the film:

It is believed that human beings are inherently selfish, which constitutes an indispensable plot element of the whole story: Old Dr. Brand thinks that ordinary people will not accept arrangements that are more conducive to the future of mankind in his opinion, so he hides the truth that human beings on earth are going extinct.

Although the selfish view of human nature is finally proved to be wrong, it does not prevent these self-respecting people from believing that they are the protectors of human beings to some extent.

The end of the film is full of hope, which enables human beings to evolve in a social sense with a spirit of exploration. As a species, we have been committed to promoting the progress and development of mankind, which is best reflected in Cooper's Micro World.