Is it a bird, is it a plane, is it a ham sandwich? You may have heard of it but wonder what causes this obscure phenomenon a Black Hole. Many people will just think it comes from a star exploding. But it really is a bit more complicated than that.
It starts off with a star about twenty times the size of our own sun. When a star like that reaches the end of its life the core runs out of fuel and collapses in on itself, when this happens the gravity runs wild. It pulls inwards but at the same time it pumps energy outwards. For a few million years there is an extremely even duel, but when the star completely runs out of energy fusion stops, the stalemate ends, and gravity wins.
The remains turn cannibal and start eating away at the hydrogens provided by the dying star. The consuming baby black hole chews more than it can swallow. It chokes, coughs and spits off massive explosions. Finally there is an immense explosion a star that was once a giant is now multan rubble.
In that one second it contains more energy than our sun will accommodate in its entire lifetime. What is left is a midsize destroyer. This new black hole shoots beams of energy across the universe. These beams are known as gamma rays they travel at the speed of light.
There is a black hole at the centre of every galaxy and many smaller ones spread across the universe. We don't quite know how the black holes at the centre of each galaxy are formed. Supernovae are similar to black holes with much the same process but they come from smaller stars.
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