A Black Hole’s Orbiting Ring of Light Could Encrypt Its Inner Secrets

When photons hurtle toward a black hole, most are sucked into its depths, never to return, or gently deflected away. A rare few, however, skirt the hole, making a series of abrupt U-turns. Some of these photons keep circling the black hole practically forever. Described by astrophysicists as a “cosmic movie camera” and an “infinite light trap,” the resulting ring of orbiting photons is among the…

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