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