Scientists have been trying to determine if black holes (earlier known as `frozen stars') 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 (The Earth's escape velocity is 11.2 km/s). 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).
Although the idea of light being trapped in such a dense object dates back to Laplaze in the 18th century, it wasn't until Einstein developed general relativity that Karl Schwarzschild derived a mathematical solution to describe such an object.
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