earth passed through a black hole.
No! You've got it all wrong!
A blackhole is an area in space in which the gravitational field is so powerful, that not even light can escape, once having past the event horizon.
Btw, the event horizon is the point of no return given by the formula if I remember correctly:
R(sh)=2GM/c^2, or roughly R(sh)=3M
Where:
R(sh)=Swarzschild radius
G= Newtons gravitational constant
M=Mass (solar masses)
c=speed of light (299,792,458 m/s)
Oh yeah, my point is, blackholes don't SUCK, they are just a very dense object that exerts immense gravitational force, zero volume and infinite density.
If there was a black hole in the solar system, the sun and planets would orbit the blackhole
(Unless of course the Sun was bigger then the black hole which is actually possible if we had a different sun, I think the smallest known black hole is something like 3x our suns mass which is 2x10^30 kg I think)
If right now for some stupid reason the sun turned into a blackhole, it's effect on Earth would be exactly the same, except it will emit no radiation thus making the earth a very cold place.
So basically, if there was a black hole any where near us we would know By the gravitational force it gives off, and from the X-rays being exerted as matter accelerates while falling in. Or possibly accrection disc.
When a blackhole has insuffecient mass, it evaporates because it doesn't have enough gravity to hold itself compressed at zero volume.
In conclusion, blackholes arn't some magic sucking space vacuum.
They are just mass, in a state where they are the size of an atom and contain a lot of mass and there for they have a high density. And the escape velocity is the speed of light or greater of the event horison.
There, I think I know what I'm talking about and if you have any queries don't hesitate to ask.
)
