for the use of civilization itself,
For example, the warp engine technology,
The second level is the stellar civilization,
That' s a Dyson sphere,
Dyson spheres are like huge structures made up of countless solar sails,
second-level civilization,
One possible way to harness stellar energy is the Dyson sphere,
There is a good measure of,
Even entire civilizations can live in a Dyson sphere,
And for the second-level stellar civilization,
The Dyson sphere is simply,
Civilizations that reach this level should be able to travel easily between stars,
However, the technological level needs to be sufficiently developed,
can utilize the full energy of the star system in which it is controlled,
Harvest almost all the energy of stars with high-tech level,
is able to exploit the energy in its star system,
It' s a huge building that encloses almost the entire star,
A Dyson sphere will completely enclose
na looked at the transparent wooden rimless smart glasses,
including the energy of other planets, and even stars,
If a cosmic civilization can successfully control the Dyson sphere,
This also means,
In theory,
even developed a way to travel faster than the speed of light,
Then it can be said that it is already a stellar civilization,
Say slowly:
For example, you can arbitrarily travel between the Milky Way galaxy with a diameter of about 100,000 light-years,
Dyson spheres are theoretically possible,