A couple of things about kilometer-long space stations. That China and maybe some other nations in the world are planning

At first, we must realize that creating the kilometer-long modular structure in the space. Is not so complicated a task as people might think. This system requires only ten to twenty Saturn V-scale rockets or modules. Those rockets will be a dock together at the Earth orbiter. The length of Saturn V is 110 meters. And maybe half of it would be left empty for use as part of the modular space station. 

In some plans, those modules are made by using the empty rocket stages. In those stages is installed needed equipment. Like docking systems airlocks, and consoles. Whatever is needed to complete the structure of the space station. The purpose of the airlock is also to act as the fire door. And deny the lack of gas in the case where the core of the space station is damaged. Every each of the modules can be changed if there are problems with them. 

But why that kind of system is causing concern? The tube-looking structure can be a mega-laser. The kilometer-long monster can create the megawatt or even gigawatt class laser ray. 

The thing is that the empty rocket stages that can be used as the part of the space station can be used as the modules of the mega-lasers. Inside the structure of the kilometer-long tube would install the laser element. That element can also be modular and the bites of the laser tube can connect to the one entirely in the space. The laser would locate in the 20 50 meters long rocket stages. And the energy for that monster would be pumped by the auxiliary satellites. 

The kilometer-long carbon monoxide laser can seem like some kind of science fiction tale. But the idea is that the laser would be at the sun side of the Earth. And the support satellites that are orbiting the Earth by using the polar trajectories would aim their mirrors to that laser. Or if those auxiliary satellites are using lasers for pumping energy to the mega-laser can be anywhere. The idea of the mega-laser has been taken from the Soviet plans. 

The original idea of the lasers is to use solar power for creating their beam. The sunlight would target the laser system by using the mirror that collects the radiation to the laser element. 

The idea was officially to create the power satellite, but there were also military purposes for that kind of satellite. The power of the laser ray of this type of system is depending on the energy load that can be loaded into the laser system. And the kilometer-long laser that has auxiliary lasers for energy pumping is creating an extremely powerful ray that can affect targets on the ground. 

()https://www.newscientist.com/article/2275818-china-is-about-to-start-building-a-space-station-in-orbit/

Image:()https://www.newscientist.com/article/2275818-china-is-about-to-start-building-a-space-station-in-orbit/

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