I don’t really get how somthing that’s small makes it a black hole.
In: Physics
It’s all about mass. A black hole the MASS of the earth would have a DIAMETER about the same as a cherry or a small grape. Mass attracts all other mass via gravity. If there is enough mass in a small enough space, gravity can become stronger than all the nuclear forces (the things that keep atoms whole).
This is why stars with enough mass (3-5 times larger than our sun) are able to overcome all of the outward pressures produced by atoms and subatomic degeneracy pressures and crush it all down into a singularity.
So in other words the size is determined by how much matter is present, not the other way around.
To ELYN5…the SIZE of that black hole ( or its event horizon ) can be calculated by
> R = 2MG / c^2
R = the radius
M = all the mass
G = the gravitational constant (-6.67 x 10^-11 )
C = the speed of light
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