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