Like a lot of things....there is no reason to believe such a thing.
A good general rule for questions of this sort is called "Occam's Razor". This principle says that if two explanations describe something, the one that requires no extra assumptions is more likely to be true.
(john here) I don't see an application of "Occam's Razor" here. There are no explanations offered of anything. There is a conjecture-that there is a black hole at the centre of Earth. This conjecture is just wrong.
If the Earth were inside a black hole, it would appear much smaller due to the extreme gravitational forces bending light.
For all scientific reasons, no astronaut had went inside a black hole. It would take many earth years to visit the black hole, so reaching a black hole is impossible.
What Remains Inside a Black Hole was created in 1996.
A black hole can,but it is very rare for a black hole big enough to swallow Earth.
Nothing can escape from a black hole.
No. Earth would be destroyed if a black hole came anywhere close to it.
Inside a black hole, time behaves differently than outside. Time slows down as you get closer to the center of a black hole, eventually stopping completely at the singularity. This means that time inside a black hole is essentially frozen.
Should Earth ever collide with a black hole, it would get destroyed.
It disappears forever
No, they are not the same. A singularity would be inside a black hole.
No.
no