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