They are just regions of spacetime with a lot of mass and very strong gravity. 1) They aren't power sources, but if they are spinning that rotational energy co

They are just regions of spacetime with a lot of mass and very strong gravity. 1) They aren't power sources, but if they are spinning that rotational energy could theoretically be harnessed: https://en.wikipedia.org/wiki/Penrose_process https://en.wikipedia.org/wiki/Penrose_process 2) Uh, no?