Space farm for space immigrants

The United States, Japan and Europe have all listed "long-term experiments of plants in sealed capsules" as key research projects in their space programs in the 2 1 century, and are designing space farms. Scientists believe that the space farm may be built into a spherical cap, and its external rotatable mirror is used to adjust the indoor temperature, so that plants are in the same growth environment as the earth.

Scientists analyzed the soil retrieved from the moon and thought that it could be used as the soil for planting crops in space farms with a little modification. At the same time, it can also be used to extract oxygen and synthetic water to meet the needs of astronauts.

There is no need to weed crops and spray pesticides on space farms, so there is no pollution, and the vegetables and fruits are clean. In addition, the space farm is fully automated, and crops can be fully managed by simply manipulating buttons in the "control room".

Russia's "Peace" space station has a space greenhouse with an area of about 900 square centimeters, and dozens of "space seeds" of different varieties of wheat are planted. Under the condition of weightlessness in space, the sown wheat is expected to mature in 70 ~ 90 days. In this closed space greenhouse, all farm work such as loosening soil and watering is done automatically by robots under the control of astronauts.