... uni-verse, and also for particle physics and quantum gravity.• The use of gamma-ray, x-ray, optical, infrared, and radio telescopes onEarth and in space to detect new black holes in orbit about companion ... uni-verse, and also for particle physics and quantum gravity.• The use of gamma-ray, x-ray, optical, infrared, and radio telescopes onEarth and in space to detect new black holes in orbit about companion ... satellites now planned, and from new gamma-ray, x-ray, optical, infrared, and radio telescopes on Earth and in space. The CGP expects these phenomena to yield increasingly accurate tests and demonstrations...