Just about as far as a black hole is from Earth, or from the Sun. The nearest known black hole is at a distance of about 3000 light-years; the distances within the Solar System are insignificant in comparison.
V4641 Sgr in the Sagittarius arm of the Milky Way. (1600 light years away)
Neptune does not have a black hole
Neptune doesn't have a solid surface.!
About as far as Earth or the Sun is.
It is so far impossible to determine the makeup of a black hole.
yes it does have a black spot but it disappeared in 1994 but then it came back i don't know when i just know that it did come back but in a different place this time in the northern hemisphere last time it was in the southern
Neptune does not have a black hole
No. If Neptune were to encounter a black hole, it would be destroyed.
Neptune doesn't have a solid surface.!
A black hole can definitely get to the size of a planet. The width of the largest known supermassive black hole is thought to be over ten times the size of the entire orbit of Neptune around our Sun.
About as far as Earth or the Sun is.
It is so far impossible to determine the makeup of a black hole.
The nearest black hole to Mercury is about 1600 light years away.
yes it does have a black spot but it disappeared in 1994 but then it came back i don't know when i just know that it did come back but in a different place this time in the northern hemisphere last time it was in the southern
As far as we know, most, if not all galaxies have a massive black hole at their centre.
A black hole near Neptune -- or near any other object in space -- would suck up that planet (or that object). Fortunately, there nearest black hole to our Solar System is several thousand light years away.
In that case, the black hole's gravitational pull on Earth will be less than the Sun's gravitational pull - you can do the calculations. However, such a black hole might very well disrupt the orbit of some of the planets.
No. Nobody has ever been to Neptune. Also, Neptune is a gas planet. There is no solid surface to dig a hole in.