Summer sale: Save 58%

Topic: Conformal Cyclic Cosmology

Full-Sky Map Of Cosmic Background Radiation, A Full-Sky Map Produced By The Wilkinson Microwave Anisotropy Probe (Wmap) Showing Cosmic Background Radiation, A Very Uniform Glow Of Microwaves Emitted By The Infant Universe More Than 13 Billion Years Ago. (Getty Images)

What are "leftover" black holes?

Matthew Rozsa