If a blackhole comes close enough to any object, it will "destroy" it (Nothing is really destroyed) however, the majority of known black holes (Discounting supermassive black holes which primarily only exist in the center of galaxies) are stellar black holes, which although still being quite large in a relative sense (Gravitational singularities are infinitely small), you would need to get extremely close to the black hole to be unable to escape.
But yes, a black hole is a "killer of planets" but only if it comes close enough to a planet to either altogether absorb the planet or close enough to steal it away from it's parent star.
no
There are no known planets in the vicinity of a black hole.
A black hole
They are unrelated.
As the planet is approaching a black hole due to the immense gravitational pull on the objects surrounding it, the planet revolves around the black hole until it falls into the black hole.
A planet that falls into a black hole would get completely destroyed. Its mass would be added to the mass of the black hole.
I don't think there would be planets, but I know there are stars!
there is nothing inside a black hole...a black hole's density is very large...so large all of our planets and stars including the sun's density would not even be 0.1% that of a black hole...a black hole is so strong, not even light can escape it...nothing can.
We do not know of any planets that have been destroyed by a black hole, but it probably has happened. Because of the vast distances in space and the fact that neither planets nor black holes emit light, both are hard to detect.
there is nothing inside a black hole...a black hole's density is very large...so large all of our planets and stars including the sun's density would not even be 0.1% that of a black hole...a black hole is so strong, not even light can escape it...nothing can.
You will see stars/planets orbiting what looks like nothing.
Stars and planets orbit around the most dense masses, that's why we orbit the sun. Our main source of evidence is that planets are orbiting and sometimes disappearing into what looks like nothing, but it is a black hole.