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