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Of course, in the past three years, human civilization has been doing its best to build the Earth Defense Circle, but there is still a long way to go before the completion of the entire Earth Defense Circle, because according to the plan of the Earth Defense Command, not to mention In addition, only the earth's low-Earth orbit defense facilities, that is, space stations with a tonnage of more than 500 tons, will exceed 5,000 after completion.

This is just a space station in low-Earth orbit. In addition, there will be more than 1,000 space stations for military use in medium-earth orbit space stations with a tonnage of more than 500 tons. , will also exceed 100 seats.

So now it seems that they have built many large space stations, but compared to the whole plan, this is just the beginning, and according to the plan of the Earth Defense Command, with so many space stations, the civilization of the earth will be in the next six months. All of them have been built, so such pressure is still very huge for the entire human civilization.

Of course, in addition to the construction of defense facilities outside the earth, the construction of ultra-long-range defense facilities on the earth has not fallen behind. In terms of attacks, there are only beam energy weapons, such as lasers, for the time being.

In addition, only those very large rockets capable of launching deep space exploration spacecraft also have certain attack capabilities.

Therefore, since the establishment of the Earth Defense Command three years ago, the entire human civilization in the whole world has also been thriving. Except for wars in uncivilized areas on the entire earth, wars have basically been eliminated in other areas, because Everyone knows that compared to the threat of alien civilizations and the huge interests in the universe, this little bit of interest on the earth is no longer in their eyes.

What's more, if someone in the entire Earth Defense Command Center dares to launch a war on Earth, then the right to speak in the Earth Defense Command Center will be weakened. Even being replaced by others is something they absolutely don't want to see. You must know that this is related to their future development and interests.

And such a large and numerous project naturally greatly stimulated the earth's economy, and most of the companies made a lot of money, and this naturally included Tiangong Technology.

Because Tiangong Technology is the most advanced aerospace technology company on the entire earth, naturally many products are unique and indispensable. For example, the pulse detonation rocket engine of Tiangong Technology is one of them. If this pulse detonation rocket engine is not used, then there will not be so many aerospace planes on the earth in the past three years, and naturally many space stations in earth orbit cannot be built.

In addition, there are some materials of Tiangong Technology, especially special high-temperature resistant glass, which is also one of the necessary materials for manufacturing aircraft. Although other space agencies on the earth,

Many also have high-temperature aerospace glass, but compared with the special glass of Tiangong Technology, the performance of these aerospace glasses is far worse. Of course, the special glass that can be sold to them is for Tiangong Technology or for Huaxia. They are already very backward, and they are all the first generation products of Sky Technology. After all, the most advanced products cannot be sold to them, unless one day the entire civilization of the earth has merged into one big family, and there is no distinction between countries. By that time, their Tiangong Technology will naturally lift these restrictions, but it is impossible now.

Of course, since the volumes of multiple space stations in earth orbit are already very large at this time, even ordinary people on the ground can already clearly see the existence of these spaces, so people on earth are already used to it at this time. With the existence of these space stations, people are more aware of the coming of the cosmic era, so even if the major colleges have expanded their enrollment in space majors, 200% or more, but even so, the related majors of the major colleges are also Every year is full.

At the same time, there are so many space stations, especially the space stations affiliated with Tiangong Technology and the official space station. Since the construction has basically been completed, they look quite huge. Once it is night, they hang in the sky like two night pearls.

These two space stations are so huge, there are naturally few people working in these two space stations, and they can’t go anywhere. Take the Ziwei space station of Tiangong Technology as an example. Although its total tonnage is only 1,500 tons, but, There are as many as thousands of astronauts living and conducting scientific research in this space.

In addition, from time to time, people also saw a little bit of fire, approaching these space stations, and then there was fire, leaving these space stations. Everyone is very clear about this. The aerospace plane of the space station is a means of transportation between the earth and the space station.

At the same time, in this era, it is quite convenient for people to travel to space. They only need to register their names with the official or Tiangong Technology, and the price is very cheap. The price for each person to and from the space station is only ten Only tens of thousands, it can be said that even ordinary people can afford such a price.

In the past three years, according to Tiangong Technology and official statistics, the number of people traveling to space in China alone has reached hundreds of thousands. One can imagine how popular space tourism is today.

Of course, this is only for China. If it is placed outside of China, space tourism is still not an easy task, because at this time the official side and Tiangong Technology, all aerospace planes are added. Speaking of which, the number of them has reached more than 500, and among them, the medium-sized aerospace planes are still the main ones, that is, the Phoenix II series.

You must know that the Phoenix series is not the Phoenix 2 series. Let alone the passenger operation of the Phoenix 2 series. The aerospace plane is only the original version of the Phoenix 2 series, which is the Phoenix-kt2 type. At most, the crew can also be carried. 13 astronauts, this is the standard version of the Phoenix II series.

As for the passenger-carrying space plane of the Phoenix II series of space planes, its maximum passenger capacity can send more than 100 astronauts to the space station at a time, and then pick up more than 100 astronauts from space. It is unmatched by other space agencies in the world.

Although other aerospace agencies in the world have developed their own aerospace aircraft after purchasing the pulse detonation rocket engine of Tiangong Technology in the past three years, most of them are cargo-carrying Tongtian aircraft. Even if there are one or two, they have developed passenger-carrying aerospace planes, but due to their own technology and other reasons, their maximum passenger capacity can only carry 20 or 30 astronauts at a time. Thank goodness.

Coupled with the Phoenix II series of aerospace planes, they can reach space stations in medium and high orbits, while the Phoenix series and the aerospace planes they have developed can basically only be used for round-trips to low-to-medium orbital space stations. So the gap between them and Huaxia is still very huge.