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A supermassive black hole is depicted in this artist's concept, surrounded by a swirling disk of material falling onto it. The purplish ball of light above the black hole, a feature called the corona, contains highly energetic particles that generate X-ray light. The corona gathers inward, becoming brighter, before shooting away from the black hole. NASA/JPL-Caltech
Astronomy

Here's How Light May Have Burst Through the Universe and Out of the Dark Ages

Ancient black holes may have helped ultraviolet radiation escape from early stars, transforming the universe into the light-filled marvel we know today.

NASA/WMAP Science Team