Musk said that landing on Mars in five and a half years will be realized?

I don't think it will be realized, because five and a half years is still too short, and it will be a matter of time before Musk lands on Mars, but it will not be within five and a half years, because the current technical means still need to be improved, and there are still many places to be modified and tested and adjusted, which can not be realized in five and a half years. It will be an epoch-making significance if humans land on Mars in five and a half years. Although Musk is trying his best to study the plan of landing on Mars for Mars immigration, these studies need time and money. Although he now has rocket recycling technology, which can reduce the cost of launching, technical research still needs to be level.

Because sending people to the past first is technically feasible, but at present, the most important thing is how to send people back, which is what needs to be studied. Because there have been many times to send probes to Mars, and China has also launched probes now, but the problem of sending humans there is not very big. You can even send them and watch yourself by similar means, but it is very difficult to send them back, because we all know. Unlike the moon, there is gravity on Mars, and Mars is far away from the earth. So how to send Mars humans back to the earth is a very big problem.

There are also very important problems, such as how to ensure the safety of astronauts when landing, how to ensure the safety of astronauts on Mars, and the safety during sailing and returning. These details are very, very many, and the technology involved is very, very wide, so I don't think this can be solved in five and a half years. We can see from some astronauts that when they return to Earth, they can't move, and they all need to dispatch a lot of doctors. It was difficult to walk when I first came out.

If you land on Mars, unlike going back to Earth, no one has helped you in the past. You can only rely on yourself and your partner, but the partner who comes down with you also faces the same problem, and the gravity of Mars is completely different from that of the earth. It will take a while for one third of the earth's gravity chamber of Mars to get familiar with the gravity of Mars, not to mention how to make your body recover after landing on Mars. This is a long study, because it takes a lot of money and time to train every astronaut, and it is impossible for us to let astronauts take risks and sacrifice as an experiment, which is not desirable.