Sunday, 30 January 2011

Black hole

Does the black hole swallow everything?

Set the ball spinning into the funnel.

The ball travels in accelerating speed toward the throat of the funnel.

In our model, the funnel represents the curvature of outer space caused by the black hole, the throat is the black hole itself, and the ball is an object being sucked into the hole. Due to the drastic curvature of space, the force of gravity around the black hole is especially strong. Once an object enters into the area within the stationary limit it still has hope. Some of the objects will be hurtled out of the range of the black hole, while some will be sucked into its centre, the singularity. Beyond the event horizon, not even light will be able to escape the gravitational field of the black hole. This is the reason why a black hole cannot be observed other than indirectly.

In time, the speed of satellites orbiting the Earth in outer space slows down due to the friction present in the uppermost atmosphere. This friction will eventually cause the satellites to drop back to Earth. The limit of the atmosphere and the gravitational pull of the Earth are as fateful a combination for satellites as is the event horizon of a black hole. Those objects that venture beyond the borderline are facing unavoidable destruction – sooner or later.

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