What is a black hole,and the different types of black hole

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What is a black hole? 






A black hole forms when a large, dying star collapses. The gravity created by this condensing matter completely overpowers any outward sources, including light.

 Although a black hole emits no light, it's presence is detectable by radioastronomy equipment.

It's extremely strong gravitational pull sucks gas and dust toward itself, forming a whirling accretion disk around the hole.
The disk heats any matter that crosses it, emitting x-rays(opposite).

Remember that nothing escapes from a black hole. 
Types of black hole:

 Stellar mass







-Formed from collapsed cores of giant stars.
-mass a few times greater than that of Earth's son.

Intermediate mass









-100-10,000 times more massive than Earth's sun.
-Only a few identified and confirmed.

Supermassive









-Largest type
-Inhabits cores of galaxies
-From a few million to a few billion times larger than the sun.

Primordial black hole








-Smallest type
-Formed in the early universe, soon after the big bang.

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