Immigrants to space look up at another planet and see only the number of Ganges stars. How is the sky formed?

First of all, the earth is just a very ordinary planet, and other planets are similar to the earth.

Any planet is as attractive as the earth and can attract gas. As long as there are stars around the planet and transplanted plants on the earth, oxygen can be produced through photosynthesis. In the long run, the temperature can be controlled by controlling the content of greenhouse gases in the planet to achieve the effect of heat preservation. In addition, water is composed of hydrogen and oxygen, which are almost the most abundant elements in the universe, but most planets do not meet the binding conditions, so there is little liquid water. When they immigrate, they can collect these two elements through special technology to make water.

The moon also has gravity, but it is much smaller than the earth, only 1/6, but this can only make you jump higher or throw things higher, and there will be no situation where you can't fall.