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Black Holes

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Rafael Velez

on 18 September 2014

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Transcript of Black Holes

Smallest black holes formed when the universe began.
Stellar holes are made when the center of a very big star falls in upon itself.
A supernova is an exploding star that blast part of the star into space.
Supermassive black holes were made at the same time as the galaxy they are in.

How Big Are Black Holes?
Black holes can be big or small.
The largest black hole is called the "supermassive" it mass is more than 20 million suns together.
Another kind of black hole is called "stellar". Its mass can be up to 20 times more then the mass of the sun.
The center of every universe has a supermassive black hole.

Black Holes
Will Our Sun Become a Black Hole?
Our Sun and others like it are to small to become a black hole.
Instead, in a couple billion years, our Suns core will become a White Dwarf.
It is a dense ball of Carbon and Oxygen that no longer produces nuclear energy.
What are black holes?
Region of spacetime from which nothing can escape.
Infinitely small point.
Great amount of matter packed into very small area.
Gravity is infinitely strong in a black hole
Defies our laws of physics
How are black holes formed?

How Do You Notice A Black Hole

It isn't possible to "see" a black hole.
You can notice a black hole by the matter circling around it.
Also when a star is getting sucked into the black hole, it is heated up by millions of degrees resulting in x-ray emissions that can be seen
Are any black holes close to Earth?
As of now, the closest black hole is several thousand light-years away.
They are far enough to not have an effect on the earth.
A Super Massive Black hole is in the center of our universe, about 27,000 light-years away. Although, It's far enough that it won't affect our solar system.
Work Cited
By: Ravi,Rafael,Brianna,Ana
Full transcript