A black hole essentially is an incredibly compact body which has warped space-time enough to make any escape from the force of gravity impossible. They are thought to be at the center of galaxies, including our own Milky Way. As the name implies, a black hole cannot emit or reflect any light; making them practically invisible. If enough mass is concentrated into a small enough region, the curvature of space-time becomes so harsh that nothing can continue to orbit stably; not even light. The ultimate fate of all incoming matter is to perish in a singularity, a region of infinite curvature. The interior of a black hole is poorly understood because no form of information can ever leave. A black hole's demarcation of no escape is called the horizon. Once something is inside the horizon there is no possible way of leaving the black hole, it is the...