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Black Hole Formation Stars are affected by two main forces Nuclear fusion and gravitation Black Holes are the result of an imbalance of these two forces Nuclear fusion- the outward force from the stars centre and gravitation- the force pulling inwards These two processes balance one another until all the stars hydrogen is exhausted allowing gravitation to take over Once gravitation dominates the star becomes unstable and starts to collapse As the core compresses it heats up and results in a supernova explosion in which the material and radiation blasts out into space If what remains of the star is greater than 3 times the mass of our sun it will continue to collapse and form a black hole Relation to General Relativity Albert Einsteins theory of general relativity suggests that the most densest and massive objects conceivable such as black holes have gravity that is so strong that nothing not even light can escape their grasp I do not fully understand Einsteins general theory of relativity but Im going to try and give everyone a very basic understanding of why Einstein thought space and time are not separate but closely connected known as space-time When we describe the position of a flying plane we can use length width and height these make up the three dimensions of space But another dimension can be used time these four dimensions make up space-time The fundamental aspect of general relativity is effect that matter with a gravitational field has on the curvature of space rather on the four dimensional space-time One way to visualise Einsteins view of gravity was to think of the rubber sheet analogy described in many texts In order to understand this consider a sheet of rubber with a weight placed on it to represent a star The weight will form a depression in the rubber causing the sheet near the star to be curved rather
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