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