Updated: Apr 10, 2019
Today, April 10, 2019 scientist and astronomers unveiled the first ever picture of the event horizon, as well as, the Black Hole of galaxy M87. Black Holes where first discussed as part of Einstein's Theory of Relativity. Today humanity has its first images of one, which I place in this post. Black holes are stars that have gone supernova after their iron cores have collapsed, having no more fuel to create fusion. After the explosion the core is so dense and compact that it's gravitational pull becomes great enough to not even allow light to escape. The event horizon is the point in which matter and light, no matter what their velocity is they cannot escape and swallowed by the black hole. Much more study will need to be done but that is what we humans do, explore and learn.