Black Holes are the most mystifying objects in space. Scientists believe that Black Holes contain 90% of the universe. These dark elements of space are so dense that nothing can escape it, not even light.

Types

There are three types of Black Holes. First are the Stellar Black Holes that are formed by collapsed stars about ten times more massive than the Sun. Super-Massive Black Holes have though to be originated back to the beginning of the universe. These Black Holes are formed by stars that are almost 100 billion times more massive than the Sun. Lastly, astrophysics from Harvard-Smithsonian claimed that they had discovered a new type of Black Holes, Mid-Size Black Holes. With the observations from the Chandra X-Ray Observatory, scientists found an unidentifiable source from a galaxy 12 million light-years away from Earth and claim it to be a Mid-Size Black Hole. However, scientists still have to discover how this type of black hole forms.

Evidence / Effects

In 2004, scientists found thirty odd sources from different galaxies and think that one or more of them are really Black Holes. A common belief of the majority of the scientists is that most Black Holes exist in the center of the Milky Way Galaxy and other galaxies in the universe. Since, there are Black Holes in the center of every galaxy, another claimer that scientists made is that each of the galaxies somehow orbits a Black Hole and slowly is sucked in little by little. Surprisingly, Black Holes cannot be seen. Then, how do scientists find out the location of the Black Holes? Scientists use indirect methods to trace where a Black Hole is likely to be. If matter from somewhere in space is slowly moving in a certain direction and disappears suddenly, then scientists can predict a Black Hole is nearby that region. Scientists announced in 2001 that information from the Chandra X-ray Observatory and the Hubble Space Telescope are the best evidence for six black holes that prove the event horizon, a phenomenon where matter from a certain area vanishes and leaves an ultraviolet light signal that scientists use to find the possible location of the Black Hole.

People

Black Hole got its name from John Wheeler in 1969 when scientists could not decide on what to call this new kind phenomenon without confusing everyone else. The theory of “Black Holes” was started in the 18th century by Simon Laplace and John Michell when they were trying to prove Albert Einstein’s theory of general relativity and Isaac Newton’s corpuscular theory of light.  Stephen Hawking a present-day scientist wanted to know about how the universe was created and continued to research on Black Holes. He has published many books such as, A Brief History of Time: From Big Bang to Black Holes.