Questions tagged [event-horizon]

An event horizon is the notion of a distance away from the gravitational center of mass of a black hole. Observers outside of the event horizon can escape however any object including light which approaches a black hole and crosses the event horizon cannot escape the gravitational pull and are consumed.

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Why did the Event Horizon Telescope take so long to take a photo of a black hole?

The Event Horizon Telescope is in the news now because they are about to release the first ever picture of a black hole. They have been working on this since 2006. Why did it take 13 years to produce ...
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Does time dilation at the event horizon prevent us from seeing any changes?

If gravity is so strong at event horizon as we assume, and thus time dilation makes time infinitely slow for us, the distant observers, how could we ever observe any events ocurring over time? Wouldn'...