Black holes are one of the many amazing inexplicable wonders across the world. Black holes are also very abundant in many galaxies, notably in the Milky Way. There are believed to be at least more than ten million black holes scattered throughout the Milky Way galaxy alone. In every galaxy there is a supermassive black hole that is at least billions of times larger than the sun and large enough to swallow up the entire solar system. The first black hole was discovered in 1971 and John Wheeler, an American astronomer, coined the term black hole in 1967 (“Black Holes: Facts”). Black holes are formed from pieces of stars that exploded during a supernova explosion (“Black Holes – NASA”). They also form when two stars collide to form larger black holes (“Black Holes – NASA”). A star, about three times larger than the sun, cannot collapse due to the effects of gravity (“Black holes – NASA”). When the star collapses, it approaches the event horizon where time slows down (“Black holes – NASA”). When the star finally reaches the event horizon, time stops and the star can no longer collapse (“Black holes – NASA”). Sometimes black holes can form when an existing black hole and a neutron star collide, producing another black hole (“Black Holes – NASA”). The collision between the two also causes gamma ray bursts which helped astronomers understand how gamma rays were produced (“Black Holes – NASA”). When a larger star falls on itself, it continues to form a stellar black hole (“Black Holes” – NASA). Holes: Facts"). The largest black hole, also known as a supermassive black hole, is believed to be found at the center of every galaxy, even in the Milky Way ("Black Holes: Facts"). Additionally, supermassive black holes exist millions or even billions of times...... middle of paper ......e of the Schwarzchild black hole is the Kerr black hole that rotates instead of just standing still ( "Black holes". Black hole rotation occurs when the black hole was created ("Black holes". Black). (“Black Holes”. Black) When the black hole is finally formed, it should rotate approximately 1,000 times per second (“Black Holes”. Black). orbits around the center of the black hole ("Black Holes". Black). In general relativity, it is said to describe space-time as changing shape and behaves differently in the presence of other factors ("Black Holes. " Black). These events also affect matter and energy that will come into contact with curved space-time (“Black Holes”. Black).