According to hubblesite.org, the homepage for information gathered by the Hubble Telescope, black holes are areas in the universe where gravity is so overwhelming and strong that it pulls in all other forces within its event horizon. Gravity is so strong inside black holes that once something crosses the outer edge of the black hole, it cannot escape (hubblesite.org). Black holes are created by the collapse of a star. When an object as massive as a star collapses in on itself, the mass of the star becomes concentrated into what is known as a singularity or a single point in space. This single point is mind-bogglingly small and holds all the mass that was once in the star. It is so massive, yet so small that its gravitational force is strong enough to even prevent light—the fastest known force in existence—from escaping. …show more content…
Because even light cannot escape a black hole, scientists are unable to observe black holes directly and must resort to indirect measurement to observe the supermassive