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