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Photon Sphere

A region around a black hole where gravity is strong enough that photons (light particles) can orbit the black hole. This creates a bright ring-like structure in visualizations and images.

Source: svs.gsfc.nasa.gov

APODs including "Photon Sphere"

The Doubly Warped World of Binary Black Holes

06/05/2025

Visualization: A Black Hole Accretion Disk

08/05/2024

Visualization: A Black Hole Accretion Disk

25/08/2020