Murphy in the movie Interstellar finally understood what he understood.

Interstellar has always been a topic that people talk about, including Kip, the winner of today's Nobel Prize in Physics and the master of general relativity. Thanks to Kip Thorne, the science of this sci-fi blockbuster has also been guaranteed. At the back of the film, after Murphy received a Morse code message from her father Cooper, she shouted? Finally understand? So, what did Murphy finally understand?

At first, epidemic disease broke out on the earth, crops gradually became extinct, and human beings would face the doom of starvation and suffocation. In order to continue the human species, people have to look to the livable planet outside the earth.

However, the nearest livable planet to the earth is also thousands of light years away. At that time, human space technology could not fly that far. Moreover, even if a livable alien world is discovered, it is impossible to send a giant space station into space, and humans cannot carry out large-scale interstellar migration.

Just when everyone was in trouble, people found it near Saturn? They? Place a wormhole. According to Einstein's general theory of relativity, wormholes can fold space-time and connect distant universes. This is a very special passage of time and space.

Professor Brand realized that this gravity anomaly can not only make people go far away to find a livable alien world, but also be used to construct gravity equations. If we can solve this gravity equation, we can control gravity and send the giant space station into space, thus realizing large-scale interstellar migration. This is plan a to save mankind.

But through in-depth research, the old professor Brand only solved half of the equation, and the other half could not be solved. If we want to solve the gravity equation completely, we need the data inside the black hole, so that general relativity and quantum mechanics can be compatible.

However, it is considered impossible to detect the inside of a black hole. Black hole is the most extreme celestial body in the universe. They distort space to the extreme and can trap light in it. Even if people or detectors can safely enter the black hole and obtain data, information cannot be transmitted from the inside of the black hole through electromagnetic waves. The horizon of a black hole is a one-way channel, allowing light to enter and exit.

Without knowing the situation inside the black hole, it is impossible to derive the solution of the gravity equation. So the old professor Brand knew for a long time that Plan A wouldn't work. In the name of Plan A, he secretly implemented Plan B to colonize the alien world.

However,? They? Come out again to help mankind. After Cooper fell into the black hole, he was not destroyed by the black hole, but entered? They? Five-dimensional space-time set. There, Cooper can see every moment in Murphy's room when he was a child.

Although Cooper has obtained the data inside the black hole, he is in five-dimensional space-time and cannot transmit information to low-dimensional space-time through electromagnetic waves. The only way is through gravity, which can cross the space-time dimension.

In this way, Cooper transmitted the information of the black hole to Murphy's watch when he was a child. When Murphy grew up, he finally found quantum information from Cooper and successfully solved all gravity equations. Did Murphy shout this? Finally understand? .

Since then, gravity has become controllable, and humans have entered space through anti-gravity technology with the help of large space stations, and finally avoided extinction on the earth.