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Have you ever been watching Star Treck on T.V. and heard them mention something about black holes? Well, do you know what a black hole is? A black hole is so dense and has a gravity so strong, that they have an escape velocity, or the point in the black hole where objects can no longer return to space, of 299,792,458 meters per second. They can be as tiny as the point of a pin or as massive as fifty billion times the mass of our sun, Sol.
Boom! Bam! WHAM! An "invisible star" was discovered by French astronomer Pierre-Simon LaPlace and English geologist John Mitchel (you could put the date here if you want to). While gazing into the heavens, LaPlace and Mitchell discovered a black hole. They calculated the mass and size needed in order to get an escape velocity greater than the speed of light.
Black holes may seem very complicated, however, they are composed of only four parts. The first part is called the singularity.
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