Black holes are one of those flabbergasted phenomena of universe that research is still being done on the subject. Gravitational pull is what keep the things moving on earth but with a huge amount of power we can escape the gravity and can move around like in space ships, rockets etc.. However, this is not the case with black holes, density of the object is so high that it funnels down everything that touches it perimeter, light too cannot escape it and is engulfed by the unplumbed phenomenon.
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