Black hole event horizon. Conceptual computer artwork illustrating the event horizon of a black hole. This is the boundary beyond which nothing can es

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Black hole event horizon. Conceptual computer artwork illustrating the event horizon of a black hole. This is the boundary beyond which nothing can escape from a black hole's gravitational field, because the escape velocity becomes greater than the speed of light. The theory of general relativity predicts that a clock falling into a black hole would appear (to a distant observer) to run slow (a time dilation effect), eventually seeming to freeze at the event horizon. The freezing is an illusion: a person travelling with the clock would experience the fall across the event horizon as taking a finite amount of time.

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Size: 4558px × 3124px
Photo credit: © TONY CRADDOCK/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: accretion, artwork, astronomy, astrophysics, black, concept, conceptual, cosmology, death, dilation, disc, event, gravitation, gravity, hole, horizon, illustration, peculiar, physics, radius, rainbow, relativity, schwarzschild, science, singularity, spectrum, star, stellar, time, travel