ESA / HUBBLE (M. KORNMESSER) / SCIENCE PHOTO LIBRARY ESA / HUBBLE (M. KORNMESSER) / SCIENCE PHOTO LIBRARY
At the heart of most, if not all, giant galaxies lies a supermassive black hole. As matter rotates around and falls into the black hole, it emits powerful radiation. This causes the area immediately surrounding the black hole to be very bright, as can be seen in this animation.
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