Lets kick off my first post here at ello with a sound track I created ...An event horizon is, in general relativity, a boundary in spacetime beyond which events cannot affect an outside observer. In layman's terms, it is defined as "the point of no return" ...the point at which the gravitational pull becomes so great as to make escape impossible. An event horizon is most commonly associated with black holes. Light emitted from beyond the event horizon can never reach the outside observer. Likewise, any object approaching the horizon from the observer's side appears to slow down and never quite pass through the horizon, with its image becoming more and more redshifted as time elapses. The traveling object, however, experiences no strange effects and does, in fact, pass through the horizon in a finite amount of proper time.
Until I figure out how to embed here at ello, follow the link to listen :)