These first galaxies generated powerful radiation that broke down the neutral hydrogen gas, stripping the electrons from protons. Known as "reionization," the universe once again became a plasma state. Normally, this highly ionized gas would be opaque to radiation, but since the universe had expanded and cooled, the plasma was so dispersed that light from the galaxies traveled through intergalactic space mostly unimpeded. It's as if the cosmos flicked the starlight switch. … [Read more...] about Most Distant Black Hole Discovered, But Why Is It Such a Monster?