Black Holes are the New Black

Emma Kafarowski - Science ISP (2013)

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How Do They Work? What Happens?

Nitrogens and Gases fuel stars; but like in car, it will eventually run out. When the star runs out, the core doesn't release energy; and so it starts to shrink. When the inside shrinks, the outer layers of the star starts to expand. The star either becomes a white dwarf, neutron star, or a black hole. This depends on the mass of the star. The bigger the mass, the more likely it is to become a black hole. The star will then implode or collapse in on itself, and becomes a supernova; it has more than 5 times as much mass of our sun left over. The gravity of the mass is extremely strong and so all of the gas is pulled towards itself, squishing it all into itself. Because the gravity inflicted over all of the mass and the gases, nothing is able to escape; and so anything sucked into it will not be able to escape.

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Anatomy of a Black Hole

Black holes are made up of 3 main parts:

-Outer Layer (outer event horizon)

You would still be able to escape from the black hole here, because the gravitational pull into the center is not as strong.

-Middle Layer (inner event horizon)

You would not be able to escape from the black hole at this point, as the gravity is too strong.

-Center of the Black hole (singularity) (means 'squashed up star' basically)

The compressive place where the gravity is the strongest and all the mass is accumulated.

Exploding Stars

Did you know?

Black holes actually slow down time. This is because light from surrounding stars bend around the even horizon and this same light eventually gets pulled into nothing as it falls. A study showed that if a clock was put near a black hole and was to be pulled in, the ticking of the clock and the hands moving (assuming they survived the gravitational crushing of the black hole) would seem to slow down and eventually seem to freeze. This 'time freeze' is because of gravitational time dilation, explained by Einstein's theory of relativity.

-If our sun was to become a black hole, it would span 4 miles across!

-Black Holes spin! Since stars themselves rotate, when it implodes, it increases the rotation speed (commonly related to when figure skaters bring in their arms in a spin to increase the spin speed) and so they spin or rotate. The fabric of space also distorts and contorts its self!


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