Black hole : All The Best Free Flash Games Relating To Black Hole
A black hole is a material cluster in which the gravitational field is so powerful that no material or radiation can escape. Even the light is absorbed by black holes, so they are impossible to detect by observation.
Anything that fell into a black hole can't escape from it because of the escape velocity of black holes. The escape velocity of the Earth is defined as being the initial velocity that a body must have so as to be able to escape from the gravitation of our planet. This velocity is about 7miles per second. Thus, to send a probe towards another planet, it must be launched at least at this speed. Otherwise, the probe falls back on the Earth, or it orbits the Earth like a satellite.
Black holes are created by the gravitational collapse of heavy objects such as stars. Gravitational collapse occurs when an object's internal pressure is is not elevated enough to resist the object's own gravity. Gravitational collapse occurs to stars when they are at the end of their life, and they have not enough fuel left to maintain their temperature, and when the temperature is not high enough anymore, the stars eventually collapse under their own weight.
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