The three Shenzhou 13 astronauts have been working and living on the mainland space station for more than 170 days, and according to the original plan, they will return to Earth in the near future, and they have now entered the preparation stage of return.
At the same time, the ground search and rescue exercise has also been carried out many times to ensure that the work of the three astronauts after returning to Earth is foolproof.
When the Shenzhou 13 spacecraft returned, it implemented a rapid return for the first time, which originally took one day to return, and this time the time can be greatly reduced, improving the comfort of astronauts and the efficiency of mission implementation.
The reason why we can implement rapid return is also because our country's space technology has been improving, and under the premise of ensuring safety, we are still pursuing efficiency and astronaut comfort to prepare for more astronauts to enter space in the future.
According to the original plan, there are many flight projects on the mainland space station this year, including the launch of the Tianzhou-4 cargo spacecraft, the launch of Shenzhou 14, the launch of two experimental modules, and the launch of the Tianzhou-5 cargo spacecraft and the launch of the Shenzhou 15 spacecraft.
Among them, Shenzhou 14 and Shenzhou 15 are in orbit to take over, and 6 astronauts will be on the mainland space station for about 1 week.
Of course, the continental space station is not like the International Space Station, and someone needs to "lay the ground" when the personnel are handed over.
Instead, everyone has their own room, of which the continental core cabin has 3 sleep capsules and 1 bathroom, and on the experimental module, the mainland also arranged 3 sleep capsules and 1 bathroom, 6 even if they are in the same space station, they also have their own private space to ensure that every astronaut can sleep well and rest well.
In addition, although the continental space station is built independently by the mainland, we also accept foreign scientific research project applications, even more international than the International Space Station, and some countries that cannot participate in the International Space Station can also apply for continental space station cooperation projects.
Martin Basto, former president of the Royal Astronomical Society, said: Although the International Space Station also has many national experimental projects, these experimental opportunities are usually limited to partners.
The space station project on the mainland provides all Member States of the United Nations with the opportunity to use the Chinese space station, and all countries, no matter how big or small, regardless of the level of development, can participate in cooperation on an equal footing, which is much more popular than the International Space Station, and the pattern is much larger than the International Space Station.
In May 2018, the mainland received 42 project proposals from 27 countries, and after evaluation, 9 projects from 17 of them were selected. To put it another way, the United States also applied, but did not win because the technology did not meet the standards.
The selected projects cover a wide range of fields, including: space astronomy, microgravity fluid physics and combustion science, earth sciences, applied new technologies, space life sciences and biotechnology.
In the future, the mainland will continue to open up a number of cooperation projects, and more countries will join in.
Of course, the mainland was not so powerful at the beginning, and in the early days of the development of the mainland's space industry, it was blockaded by the country represented by the United States in an attempt to blockade the mainland in a backward state.
But we Chinese have a spirit of denial of life, and the more you block and suppress, the more we have to develop, or even surpass.
Progress in lockdown
In the 1990s, continental rockets were already competitive in the commercial arena, and even helped the American company Iridium launch several satellites.
Originally, this was normal, but the United States has always wanted to block the mainland's high-tech, so it made up a "Cox Report" and even accused the mainland of stealing classified information on US nuclear warheads.
The content of the accusations is not really important, because the real purpose of "wanting to add to the guilt is no excuse" is to seal the mainland into backwardness. Since then, the United States has stipulated that all US satellites, even if the satellites contain a screw of the United States, are not allowed to use continental rockets to launch, which is obviously to make the mainland rockets lose the international market.
Later, during the preparatory period for the International Space Station, the mainland wanted to apply for membership, but was rejected. Under the tight blockade, the mainland had no choice but to move towards the road of independent innovation.
If satellites containing American components are not launched, the mainland will launch its own satellites. Of course, others will not help in developing their own satellites, and can only develop independently.
The International Space Station has been rejecting the continent, and the continent has chosen to develop its own space station. And in the early stage of research and development, the card neck is ready, which also allows the continental space station not to be stuck in the neck from abroad.
The United States Cosmic God No. 5 rocket is currently the main rocket in service, but it was stuck in the neck by the Russian rocket engine, and after Russia cut off the supply of rocket engines, it is difficult for the Cosmic God 5 rocket to go to the sky.
Under the layers of blockade from abroad, the mainland's aerospace has not been blocked in the backwardness, on the contrary, remarkable achievements have been made.
In manned spaceflight, the mainland has a Shenzhou spacecraft, and the United States has not had a manned spacecraft since 2011, but bought a Ticket for the Russian Soyuz, until the appearance of Space X's Dragon spacecraft in recent years, it has got rid of its dependence on Russian manned spacecraft.
In the lunar exploration project, the mainland has the Chang'e series, which has successfully brought the lunar rock back to Earth. In the future, the "International Lunar Research Station" will also be built, where astronauts can stay for a long time to work and live.
The United States has also proposed a plan to return to the moon, but the embarrassing thing is that the United States extravehicular spacesuit has not been developed smoothly, you know, there is no extravehicular spacesuit, astronauts even if they go to the moon, but even the spacecraft door can not go out.
In other space projects, the mainland also has the advantage of being a latecomer, such as: Beidou satellite navigation system, continental space station and so on.
Among them, the international space station friction continues, especially whether the United States and Russia will continue to cooperate recently, there is great uncertainty, if the Russian module is separated from the International Space Station, the International Space Station is likely to crash out of control. Even if all goes well, the International Space Station will be retired in 2031 and fall to Earth.
The achievements made by the mainland in the field of space have frightened the United States and once again blockaded the mainland's space.
In 2011, the United States passed the Wolff Clause, which restricts Sino-US space cooperation in the form of laws and regulations. And even normal academic exchanges are blocked.
However, I don't know whether the United States regrets it now, because the United States lifted a stone and dropped it on its own feet, and although many space programs on the mainland accept cooperation from other countries, the United States cannot cooperate with the mainland because of its own laws and regulations. Many European astronauts have begun to prepare for entering the continental space station.