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