What are the great scientific and technological achievements in 2 1 century?

Tiangong-2, or Tiangong-2 Space Laboratory, is the second space laboratory independently developed by China after Tiangong-1 and the first real space laboratory in China. It will be used to further verify the space rendezvous and docking technology and conduct a series of space experiments.

Tiangong-2 mainly carries out applications and experiments in the fields of earth observation, space earth system science, new space application technology, space technology and aerospace medicine, including the release of small satellites accompanying flight and the docking of cargo spacecraft with Tiangong-2.

Tiangong-2 Space Laboratory was successfully launched at Jiuquan Satellite Launch Center at 22: 04: 09 on September 6, 20 16, and will dock with Shenzhou XI spacecraft. 20161June 19 3: 3 1.

Shenzhou 11 spacecraft successfully rendezvous and docked with Tiangong 2. 2016101at 7: 031minute on October 23rd, Tiangong-2 satellite was successfully released from Tiangong-2.

On 20th1965438+1October14th, Tiangong-2 completed the high-precision polarization detection of the instantaneous radiation of gamma-ray bursts, and the related results were published in the international academic journal Nature Astronomy.

2. Mozi quantum science experimental satellite

Mozi quantum science experimental satellite was successfully launched by Long March II carrier rocket in Jiuquan on August 6, 20 16 1: 40. The successful launch of this mission marks another important step in China's space science research.

Academician Pan Jianwei, chief scientist of China Quantum Satellite, said that if the ground quantum communication has built a "network" connecting every city and every information transmission point, then the quantum science experimental satellite is like a "javelin" shooting this network into space.

When this global quantum communication "heaven and earth network" is woven, massive information comes and goes in it, which is "unconditionally" safe. 20 17 65438+ 10/0/8.

Mozi, the world's first quantum science experimental satellite launched by China, successfully completed its four-month on-orbit test mission and officially delivered it to the user unit. Relevant leaders of China University of Science and Technology, Chinese Academy of Sciences and other units signed the delivery certificate.

3. Nuclear reprogramming

The so-called nuclear reprogramming is to induce mature somatic cells to return to the early stem cell state, so as to develop into various types of cells and apply them to clinical medicine to change the gene expression in cells from one type to another.

Through this technology, one easily available cell type (such as skin cells) can be cultured into another difficult cell type (such as brain cells).

20 12 Nobel Prize in Physiology or Medicine was announced in Stockholm, Sweden on1October 8 17: 30 Beijing time. Because it completely changed people's understanding of cells and life.

John gurdon, a British developmental biologist, and shinya yamanaka, a professor of stem cell biology at the Institute of Regenerative Medicine, Kyoto University, won this honor.

4. Shen Guang II

Shen Guang Ⅱ is a large-scale laser device successfully developed by China in 2002. Currently built in Shanghai Institute of Optics and Mechanics, Chinese Academy of Sciences, hundreds of optical devices are integrated in a space the size of a football field.

It can release several times the total power of the global power grid in a billionth of a second, thus releasing extreme pressure and high temperature.

"Shenguang II" can be used as a scientific experiment, and the extreme physical conditions produced by the huge energy released in the experiment are of great significance to basic scientific research, the introduction of high-tech applications and new technologies, and the protection of national security.

The future prospect of "Shen Guang" is attractive. According to experts, nuclear fusion is the hope of clean energy in the future. It is estimated that by the middle of this century, scientists can use laser fusion technology.

The abundant isotopes deuterium and tritium in seawater are transformed into huge and inexhaustible energy. The completion of "Shenguang II" has taken a gratifying step for China scientists to obtain energy from seawater.

5. Shenzhou III spacecraft

Shenzhou III spacecraft is mainly developed by China Academy of Space Technology and Shanghai Academy of Space Technology, which belong to China Aerospace Science and Technology Corporation, and the Long March II F carrier rocket is mainly developed by China Academy of Launch Vehicle Technology.

This launch is the 66th flight of the Long March series of launch vehicles. Since 1996 and 10, the China launch vehicle has been successfully launched for 24 consecutive times.

China Academy of Sciences, Ministry of Information Industry and other relevant units have developed ship-borne instruments and ground measurement and control equipment for this launch.

Baidu encyclopedia-tiangong no.2

Baidu Encyclopedia-Mozi Quantum Science Experimental Satellite

Baidu Encyclopedia-Nuclear Reprogramming

Baidu encyclopedia-Shen Guang No.2

Baidu Encyclopedia-Shenzhou III