![]() ![]() The only thing that we actually can see is what is called an accretion disk. ![]() Still, nonetheless, physicists are convinced in their existence. It is important to notice that no one actually ever saw a black hole. Theoretically, it is even possible for the Sun to become a black hole if its mass was less than the radius of the event horizon around it. If we look at our own solar system's galaxy, Milky Way, there is a black hole at the center of it that has a mass that equals to that of 250,0000 suns, and it's event horizon spans in many millions of kilometers. Abraham Loeb, the chair of astronomy at Harvard University, accurately described the event horizon as ".the ultimate prison wall - one can get in but never get out." Singularity is where the black hole's mass is concentrated, with infinite density. ![]() the black hole is also called a singularity. We can't witness any event that happens inside the borders of the event horizon, and as we said, nothing can escape it. The closer someone or something approaches to the center of the black hole, so does the speed required to escape gets exponentially greater.īecause the event horizon is actually an entry point at which escape velocity becomes bigger than the speed of light, it is safe to say that it is impossible to get out of. But if the speed of light is the fastest, how is an escape possible? It's not, that's why we call it the point of no return. As soon as something enters that ring around the black hole that we call the event horizon, the necessary speed velocity for escape starts surpassing the speed of light. As claimed by Einstein, there is nothing that can travel faster than the speed of light. ![]()
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