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