ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
NASA Illustration showing a black hole in nebula AQQ12, surrounded by a swirling disk of material falling onto it, known as an accretion disk. The white strike of light above the black hole is a representation of a feature called the corona. This is not visible to the human eye, but contains highly energetic particles that generate X-rays.
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