0 the outer edge of a black hole, beyond which nothing, including light, can escape:
Anything that falls through the event horizon effectively disappears from the universe.
It was Stephen Hawking who introduced the idea of the event horizon.
By detecting very little energy from these black hole candidates, we have new proof that event horizons exist.
Drop a book through a black hole's outer edge, known as the event horizon, and, according to Einstein's theory of gravitation, it never gets out.
To an outside observer, the black hole begins at what is known as the event horizon, an imaginary sphere marking the point of no return.
If the energy simply disappeared, then the most likely explanation is that it was sucked into the event horizon of a black hole.
It also appears as if information can't be reflected at the event horizon as there is nothing special about it locally.
In other words, no time passes inside the event horizon of the moving body.
It was ring-shaped, with a watery event horizon.
