An event horizon is the mysterious region surrounding a black hole that forever traps light and matter straying nearby. No astronomical object other than a black hole can possess an event horizon. Black holes have been inferred by observing the furious whirlpool motion of trapped gas and estimating how much mass is crammed into the tiny region of space the black hole occupies. Previous X-ray observations have offered evidence for an event horizon by surveying black hole candidates that seem to be swallowing nearly 100 times as much energy as they radiate. Those results imply that trillion-degree gas is falling over the brink of an event horizon, like water over the edge of a waterfall. Until this Hubble observation, no telescope had ever detected what actually happens to a piece of matter swirling into the event horizon, like water down a drain.
There are at least three reasons why Event Horizons should be studied:
- There are plenty nearby for us to examine
- As Black Holes pull in objects from its surrounding environment, these objects must pass through the Event Horizon therefore allowing us to observe any adverse effects on these objects
- Quantum gravity effects become significant in the vicinity of an Event Horizon allowing us to study general reletivity
New studies reveal that the center of our Milky Way Galaxy is loaded with black holes, as astronomers have expected in recent years. Therefore, if it is loaded with black holes, it must be loaded with event horizons. Many black holes have objects around them, and by looking at the behavior of the objects you can detect the presence of a black hole. You then use measurements of the movement of objects around a suspected black hole to calculate the black hole's mass. What you look for is a star or a disk of gas that is behaving as though there were a large mass nearby. For example, if a visible star or disk of gas has a "wobbling" motion or spinning AND there is not a visible reason for this motion AND the invisible reason has an effect that appears to be caused by an object with a mass greater than three solar masses (too big to be a neutron star), then it is possible that a black hole is causing the motion. You then estimate the mass of the black hole by looking at the effect it has on the visible object.
Would we survive passing through the event horizon
The first problem that an individual will encounter is Tidal Force. Basically, the part of an object that is closer to the black hole will be pulled at a different force than the part furthest from the black hole. A person entering a black hole will definitely be ripped apart.