If humans move to Mars in the future, what are the main problems to be solved first? Is it operable?

In the future, if people want a real Mars, the first thing they have to overcome is traffic, the second is the environment, and the last is meticulousness. This space environment has affected it, and it is still a little far from the last step. The first thing before us is how to survive on Mars.

The distance between the earth and Mars cannot be underestimated. According to our normal plane, the speed may take more than five months. This time is too long. There are not so many nutrients in space. If we have been eating these simple whole foods for more than five months, our health will also have problems. Even if we sleep, people will inject some drugs into the body and then solve this dietary problem. The human body still can't bear it, because dormancy also consumes energy. The human body is not a dormant tissue, and the energy consumption of half a year can't bear it.

Secondly, will the human body be affected by the Martian environment after arriving at Mars? Will the Martian environment be as detected by human beings? How difficult is it for people to build their homes on it? What is the cost for ordinary people to live there? These are all questions we should consider, because if you are livable, it is not a question of testing. If you want to live there for a long time, the cost of living, economic and social composition and even the way of social development must be there.

Finally, there is a further impact, that is, whether the space environment will have a certain impact on human reproduction. If people's descendants appear in outer space, will there be physical variation? Because there is radiation in outer space, although our earth itself has a certain amount of radiation, things that have passed through the atmosphere and human ancestors for millions of years are basically fine, but it is not necessarily that you suddenly went to another planet.