The ending scene of Interstellar shows Cooper reuniting with his daughter Murph, but it is a bittersweet moment because Murph is now very old and near death. This reunion happens after Cooper has been through a lot, including traveling into a black hole and communicating with Murph through time and space.
Cooper’s journey into the black hole leads him to a place called the tesseract, where he can see Murph at different points in her life and communicate with her by manipulating objects in her room. This communication helps Murph solve a very important math problem that saves humanity by allowing them to build space stations to escape Earth.
When Cooper finally meets Murph again, she is old and dying, and she tells him to go find Dr. Brand, who is setting up a new home for humanity on another planet. This ending suggests that Cooper will continue his journey to be with Dr. Brand and help start a new life for humans elsewhere in the universe.
The scene also highlights the theme of love and connection across time and space, showing how Cooper’s love for Murph helps him find a way to communicate with her and ultimately save humanity. The ending leaves viewers with a sense of hope and new beginnings, as Cooper sets off to join Dr. Brand and help ensure the survival of humanity.
Overall, the ending of Interstellar is about the power of love and the importance of human connection, even when people are separated by vast distances and different times. It also emphasizes the idea that even though time and space can be very different for different people, love can transcend these differences and bring people together in unexpected ways.