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