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