Ranger American Home Security - Ranger American
Ranger American Home Security - Ranger American
A black hole is a region of spacetime where gravity is so strong that nothing, including light or other electromagnetic waves , has enough energy to escape it. [2] The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. [3] [4] The boundary of no escape is called the event horizon . Although it has a great effect on the fate and circumstances of an object crossing it, it has no locally detectable features according to general relativity. [5] In m
Objects whose gravitational fields are too strong for light to escape were first considered in the 18th century by John Michell and Pierre-Simon Laplace . [8] In 1916, Karl Schwarzschild found the first modern solution of general relativity that would characterize a black hole. David Finkelstein , in 1958, first published the interpretation of "black hole" as a region of space from which nothing can escape. Black holes were long considered a mathematical curiosity; it was not until the 1960s that theoretica
Black holes of stellar mass form when massive stars collapse at the end of their life cycle. After a black hole has formed, it can grow by absorbing mass from its surroundings. Supermassive black holes of millions of solar masses ( M ☉ ) may form by absorbing other stars and merging with other black holes. There is consensus that supermassive black holes exist in the centres of most galaxies .
Ranger American Home Security - Ranger American
Ranger American Home Security - Ranger American