What is an event horizon?



  1. 0 Votes

    According to wikipedia, an Event Horizon is, in its simplest form, the point at which the gravitational pull becomes so great that it makes escape impossible. In other words, it is a point in space-time beyond which events cannot affect an outside observer. A black hole is a well known example of this.

  2. 0 Votes

    Event horizons are extremely complex phenomena – scientists can’t see beyond it. As prenda11 said, once matter enters, it never leaves and collapses into infinite density. The event horizon is the actual surface of the black hole, if you imagine it as a sphere. There is also an important distinction between event and apparent horizons, as illustrated here:

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