Black holes are one of the many inexplicable wonders surrounding the world. Black holes are also very abundant in many galaxies, especially in the Milky Way. There are believed to be at least more than ten million black holes spread across the Milky Way alone. In every galaxy there is a supermassive black hole that is at least billions of times larger than the Sun and is large enough to swallow 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 by fragments of a star that exploded in 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 gravity (“Black Holes – NASA”). When the star is collapsing 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”). Black holes can occasionally form when an existing black hole and a neutron star collide to produce another black hole (“Black Holes – NASA”). The collision between the two also produces gamma-ray bursts that have 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 located at the center of every galaxy, including in the Milky Way ("Black Holes: Facts"). Even supermassive black holes exist for millions to billions of time... in the center of the card... and the Schwarzchild black hole is the Kerr black hole that rotates instead of staying still ("Black Holes". Black ). Kerr black hole rotation occurs when the black hole was created (“Black Holes.” Black). The matter that formed the black hole had angular momentum and this momentum was preserved ("Black holes". Blacks). When the black hole finally forms, it is expected to rotate about 1,000 times per second (“Black Holes.” Black). This rotational action causes the singularity to compress into limitless thinness that orbits the center of the black hole ("Black Holes". Black). In general relativity it is said to describe spacetime as changing shape and behaving differently in the presence of other objects. factors ("Black holes". Black). These events also affect the matter and energy that will come into contact with the curved spacetime ("Black Holes". Black).).