Blue Sky Limousine

I read on Wikipedia a long time ago something about a civilization capable of harnessing all the energy produced by a star. It wasn’t a specific society, it was more about a class of society. There were levels, and above that I believe a civilization would harness the power of an entire galaxy of stars.

If we could begin to scratch the surface and channel solar power from regions of space to energy caches on earth, we could put all that energy to good use.

All the energy sources on earth have roots in the stars, right?