One possible way to harness stellar energy is the Dyson sphere,

The second level is the stellar civilization,

This also means,

A Dyson sphere will comple

even developed a way to travel faster than the speed of light,

is able to exploit the energy in its star system,

Harvest almost all the energy of stars with high-tech level,

Dyson spheres are theoretically possible,

Say slowly:

That's a Dyson sphere,

And for the second-level stellar civilization,

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can utilize the full energy of the star system in which it is controlled,

for the use of civilization itself,

There is a good measure of,

The Dyson sphere is simply,

For example, the warp engine technology,

Dyson spheres are like huge structures made up of countless solar sails,

Civilizations that reach this level should be able to travel easily between stars,

Then it can be said that it is already a stellar civilization,

Nina looked at the transparent wooden rimless smart glasses,

For example, you can arbitrarily travel between the Milky Way galaxy with a diameter of about 100,000 light-years,

However, the technological level needs to be sufficiently developed,

including the energy of other planets, and even stars,

It's a huge building that encloses almost the entire star,

second-level civilization,

Even entire civilizations can live in a Dyson sphere,

In theory,

If a cosmic civilization can successfully control the Dyson sphere,