The way this black hole would illuminate the planet it orbits ... by their hypervelocity jets (perhaps in the form of a Dyson Sphere). On the other, there's the possibility of feeding matter ...

In 1960, physicist Freeman Dyson proposed ... star by creating a Dyson sphere. A Type III civilization captures all the energy emitted by its galaxy, every star, black hole, etc.

These Dyson swarms will trap heat so any planets within the sphere are likely to experience a temperature increase. A new paper explores this and concludes that a complete Dyson swarm outside the ...