Hede.io Entry: Black Hole
A black hole is a region of space-time
with such extreme gravity
that nothing, not even light
, can escape from inside a black hole once past the event horizon
. Einstein's theory of general relativity
predicts that a sufficiently compact mass
can warp space-time to form a black hole. Mass is not the only thing that can be used to create a black hole. Because of the equivalence of mass and energy
enough electromagnetic radiation
, such as light, concentrated enough into a small enough region of space
can create a theoretical self-trapping type of black hole known as a Kugelblitz
.
Black hole formation is expected when massive stars collapse at the end of their life cycle
. After a black hole has formed it can absorb mass from its surroundings to grow. By absorbing interstellar material
, stars and merging with other black holes, supermassive black holes of millions of solar masses can form. It is believed that supermassive black holes exist in the centers of most galaxies including the Milky Way
galaxy
.
Photo Source: nasa.gov
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