It is found that most of the enterprises founded by Musk are related to the colonization of Mars.

Musk's series of companies are all prepared for Martian immigrants, such as electric cars-Mars has no oxygen and must be driven by electricity. Tunnel company-it is much more difficult to build a base underground than on the cold and oxygen-free ground. A new energy company-Mars has no atmosphere. The best energy is solar energy. Star chain project-the cost of building a bunch of signal towers on Mars is higher than launching a bunch of satellites.

The reason why Musk, who has been rich and free for a long time, risked bankruptcy is to bring the human elite to Mars and open up a brand-new human system led by scientists and engineers. This system takes the development of science and technology as the first goal and truly moves towards interstellar civilization.

The most difficult and critical technology is brain-computer interface, because it is the only way to get rid of the material body and the key for human beings to break through space exploration. The transmission of human consciousness must be transformed into a mechanical body, because the existing human brain and body are limited by age and speed, and human interstellar civilization can not meet the required hardware requirements at present, so we must innovate from the underlying hardware!