The Technical Difficulty of Yuegong-1 - High Radiation

In early 2014, China is about to launch the first Moon Palace. What are the technical difficulties in the experiment? Let's discuss together. How can the green plants grow in the cruel lunar environment, endure the huge temperature difference from minus 175 degrees Celsius to minus 120 degrees Celsius, endure the long nights of up to ten days, and the environment of microgravity?

These plants, which are about to take on a large responsibility, need to satisfy a series of characteristics in a narrow, closed, microgravity, ultra-vacuum, and strong radiation space environment, and they must also be able to exert food production, atmospheric regeneration and purification, water regeneration and purification, and waste treatment. One or more effects such as regeneration.

Plants are the core part of the entire life-support system. The suitability of the plants to be screened largely determines the success or failure of the experiment.

Those with small size, simple culture techniques, easy propagation and transplantation, stable genetic traits, fast growth, short cycle, high yield, high ratio of edible parts, and plants with strong resistance to disease and stress are preferred, scientists also noted that They are mainly used as food, to meet people's eating habits, and to meet the diversity of recipes, but also have some of the characteristics of the country.

Flammulina velutipes, Pleurotus ostreatus, yeasts in the field of microorganisms, spirulina and chlorella in algae, as well as the aquatic fern plant Aphrodisias, which was first introduced in China, have become the first experimenters selected by scientists.

At the beginning of the study, European and American countries all focused on leafy vegetables and hoped to provide fresh vegetables to astronauts. Lettuce became the favorite of foreign scientists in experiments.

Our country also focuses on leafy vegetables. In 1997, China Academy of Aerospace Medical Engineering and several institutes of the Chinese Academy of Sciences carried out plant breeding. Among the dozen vegetable vegetables, raw vegetables, rape, cabbage and pea sprouts were selected. Flavored rape and cabbage are considered ideal "space foods." The pea seedlings passed the test of a closed environment.

The joint research team was not worried about the conclusion of the experiment: “These species that have been screened by ground experiments or short-term space launch experiments are indeed feasible, and must be further verified by a large number of ground simulations and space flight tests.”

At the end of last month, the British “New Scientist” weekly website reported that NASA is developing a sealed planting jar containing 5 days of air usage. The plant seeds in the tank can be germinated on filter paper soaked in nutrient solution. The small “greenhouse” weighing 1 kilogram will become a paid launch project in an unmanned mission to the moon. The operation is likely to be completed by the Moon Rapid Transit Corporation by the end of 2015.