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