605 words - 2 pages

Scientists have been trying to determine if black holes (earlier known as `frozenstars') truly do exist for several decades now. Thanks to the great Albert Einstein and his theory of relativity, researchers have been able to predict the cosmic phenomenon of black holes. A black hole is basically an area of space that has an unbelievably high area of concentrated mass for the space it occupies, making it impossible for an object to escape its gravitational pull. This is due to escape velocity; the velocity required to exit an object's gravitational pull. Because black holes are so dense and massive the gravitational pull they possess captures light itself, making it impossible to ever escape a black hole (for nothing as of yet is faster than the speed of light).In 1915, Einstein developed the theory of gravity called General Relativity. Einstein's earlier theory of time and space, Special Relativity, proposed that distance and time are not absolute. General Relativity proposed that gravity, as well as motion, can affect the intervals of time and of space. The ticking rate of a clock depends on the motion of the observer of that clock; likewise for the length of a yard stick. The key idea of General Relativity, called the Equivalence Principle, is that gravity pulling in one direction is completely equivalent to acceleration in the opposite direction. A car accelerating forwards feels just like sideways gravity pushing you back against your seat. An elevator accelerating upwards feels just like gravity pushing you into the floor.A few months later, Karl Schwarzschild gave the solution for the gravitational field of a point mass, showing that something we now call a black hole could theoretically exist. Although the idea of light being trapped in such a dense object dates back to 18th...

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