(07-11-2012, 07:15 PM)Googolplex Wrote: @Danarogon
You don't need to play the professor of the universe.
Please read all my posts again, then you'll understand that I NEVER said the Earth will be placed in the center of the galaxy.
And then, nobody has seen a black hole yet. The core of a black hole is not bigger than an apple.
We only know the existence and how they could look like, but NOBODY has seen a black hole!
And the last picture doesn't show an existing black hole. You should know it is so many lightyears away that nobody can make a photo of the existence. It's just the light! A black hole is simply too small.
And such pictures are easy to fake and/ or optical illusions. We also can see stars that already don't exist anymore.
If the picture is real, it only shows the magnetic field lines and the accretion disc of a black hole. The black hole itself is only some centimeters big and COMPLETELY black. It will swallow any kind of light.
A black hole is a star that don't exist anymore...
Regarding the size of the core of a black hole, there's no actual limit to it. And sure, we can't see the core, but there's more to a black hole then just the central singularity, there's the event horizon that also comes in various sizes. It's impossible to take a photo of the central singularity but thanks to radiation emitted from gases in the event horizon we can see the black hole as a whole. Astronomers have also been able to take photos and photo sequences of stars and planets colliding with black holes and by it been able to determine the size and shape of diferent black holes.
So what you want to say is that nobody have actually seen the central singularity of a black hole