Hawking's outstanding contribution is-

1, Time Machine: He claims that it is theoretically feasible to fly humans into the future time machine, and the required conditions include wormholes in space or spacecraft with a speed close to the speed of light.

2. Alien theory: Aliens are very likely to exist, but humans should not take the initiative to find them, and should make every effort to avoid contact with them to avoid being hit by dark forests.

3. Interstellar migration: In August of 20 10, Hawking once again made amazing remarks when interviewed by the American intellectual video website BigThink, saying that the earth will be destroyed within 200 years, and the only way for human beings to survive is to emigrate to other planets.

4. High-dimensional space: Modern physics thinks that there are still seven dimensions that we can't see.

Extended data:

Hawking's speech:

After the publication of A Brief History of Time, Hawking has made many public speeches to the general public in Britain, the United States, Japan, Hong Kong and other places for many years, describing the origin of time, the end of the universe and time travel, and his popularity is like a "rock star". Part of the speech list:

The Origin of the Universe (Chinese)

The Origin of the Universe

The beginning of time (English)

Distortion of Time and Space (English)

Does God roll dice?

Life in the Universe (English)

Baidu Encyclopedia-Hawking