# the maester answers how to grow vegetables on the moon #
In recent days, the 16th issue of the academic lecture has come online on platforms such as the shivering. Wang shuu, a member of the chinese engineering academy and technical expert in human and environmental engineering, referred to the theme " space lighting dreams " , reviewed the history of the development of human space in china and shared recent advances in environmental control and life-support technologies。
The wang shura is now 87 years old, the only one in the field of human and environmental engineering and a professor at beijing university of aeronautics and astronautics. He promoted breakthroughs in environmental technologies, new non-fluorinated hybrid refrigeration technologies, air refrigeration technologies and low-temperature technologies, and made a notable contribution to the construction of environmental modelling projects in china。
Environmental control and life support system (ecss) is known as the "guardian umbrella" for astronauts' lives. This technology has played a key role in the continuing breakthrough in human space in china。
In his speech at the baccalaureate lecture, wang shurak spoke in particular of the possibility that a new generation of life-support systems could play a key role in future moon research stations, providing basic water, oxygen and food for human survival and helping astronauts to achieve a permanent presence。
How far are we from growing the moon
As of 20 september, the shenzhou xiv crew had been present at the chinese sky palace space station for three and a half months, cumulatively exceeding 100 days. And in april this year, after 183 days of space missions, the 13-wheeling crew returned to earth, creating a record of the space presence of chinese astronauts on a single mission. A qualitative leap has been achieved compared to the 21 hours of the first manned space mission of the shenzhou five in 2003. This is dependent on the continuous upgrading of the life support system。
There are currently three types of life support systems. The first is the carrying of a resupplyed life support system to carry the food and oxygen required by astronauts up to the sky, a technology that can provide for a short-term space presence. According to the wang dictionary, astronauts require 2,800 kilos of energy per day and 16. 4 kilograms of material。
If there is a six-month presence, 3 tons of material would be required. It is clearly unrealistic for astronauts to carry a kilo of food, which is 300 times the size of the launch, and 900 tons of launch weight for six months of life. Second-generation life support systems were created. The physico-chemical regenerative life support system, which produces oxygen through electrolytic water, reduces the supply of oxygen and water resources while ensuring the proper functioning of the experimental platform。
The chinese astronauts were able to make a six-month leap in space with the second generation of life support technology. In order to achieve a longer-term presence, or even a permanent existence, a third-generation life-support system, the bioregenerative life-support system, is needed. Through people, plants, animals, micro-organisms, controlled ecosystems are formed, similar to the earth's ecology。
Currently, many countries, including russia and japan, have conducted ground-based experiments to explore the construction of such ecosystems. For the first time in the world, the moon palace i biological regenerative environmental protection system, developed by the king's shum school of aeronautics and astronautics at beijing university, is the artificial closed ecosystem of the four biological chains of man-plant-activated microorganisms. The experimental device was developed under the leadership of professor liu hong, and the members of both groups lived in closed rooms for a record period of 370 days。
With the gradual construction of the chinese sky palace space station, ground-based experiments are being transferred to space and planting experiments are proceeding in an orderly manner. There is widespread interest in this development, ranging from good rice to mid-autumn vegetables for astronauts. According to wang dictionary, the hardest thing to grow in space is the weightlessness of the environment, which is difficult to achieve in terrestrial environmental simulation techniques. Once the plants can be adapted to space weightlessness, they will make a longer-term space presence in the future a reality。
Earlier, 84-year-old launch vehicles and the aviation engineer, dr. Long lo hao, had mentioned china's expedition planning when participating in the " audience lecture " column. According to that plan, we will complete two launch missions around 2030, transporting three astronauts and landing on the moon. Planning for the construction of the moon scientific research station has also begun after the manned landing. A long-term presence would undoubtedly save significant costs for a costly man on the moon, which would depend on a new generation of ring-control biotechnologies。
Mr. Wang duk described the fact that, once the third generation of survival techniques have matured, they will make the lunar vegetables and the long-term presence a reality, essentially meeting human survival needs. “regenerative survival systems, with many plants and microbes, live together in a closed compartment on the ground, guaranteeing 100 per cent of human oxygen and basically 100 per cent of human moisture. In addition, it guarantees between 70 and 80 per cent and even 90 per cent of food supplies.”
Space travel requires the involvement of young people
In the latter part of the speech, the dr. Wang shared the history and achievements of our country in the field of space. Over the past 60 years, china has made remarkable achievements in space, from zero to one, through successive breakthroughs in geosynchronous technology, satellite relay technology, satellite navigation technology, manned space technology and mars exploration technology。
“china's space development has increased the country's combined strength, expanded its national space and preserved its national security to the greatest extent possible. Looking back at china's history of space development, it is a history of autonomous innovation for the chinese nation and, above all, a history of ablaze and strengthen our country, helping to push the chinese nation to the centre of the world stage.” wang shura says。
During the interview, the 87-year-old dr. Wang spoke about his hopes for the present generation of the “00s and beyond.” “i very much hope that some of us will be able to do the future of aerospace. It is to be hoped that our new students will, first and foremost, be able to link their destinies and those of their countries well together, to create more miracles and to use your light and heat as our country will in the future be at the forefront of the world's space industry and even ahead of it.”
Wang shura also spoke about his awareness of the spread of knowledge, with particular reference to the impact of short videos on young people. “i think short video is necessary, because the knowledge of space and aviation among young people is very helpful to him in choosing his own future direction. The spread of scientific knowledge is important for the selection of talent. The quality of our country is enhanced by the increased knowledge and knowledge of young people throughout the country.” wang duk says。
New forms of knowledge dissemination, such as short video and live broadcasting, have become increasingly popular among young people, from live live broadcasts of the sky palace classroom to the current participation of a large number of academicians in science. It is understood that the "students' speech" section was produced jointly by the chinese institute of science and technology, science and technology, china, and the voice, and invited prominent national academics to share scientific and technological knowledge and latest developments in various fields. At present, the first six issues of the second quarter of the column are on-line, with a cumulative broadcast of over 40 million。
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