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