How come black holes are so massive?

[Gawdzilla Sama]

I think it may help if you think about it as a star in reverse. When it's still a star, it's pushing shit out constantly. A black hole is sucking shit in constantly. A black hole warps space and sucks shit in because of its incredible density. When it's still a star, the mass may be similar, but the density isn't enough to warp space.

Nice screwball. The star is pushing matter out against it's own gravity. When it can no longer do that it starts to collapse. The minute the fusion process starts making iron the star is doomed, because iron doesn't fuse into anything, it just stays as mass.

[FBM]

I think it may help if you think about it as a star in reverse. When it's still a star, it's pushing shit out constantly. A black hole is sucking shit in constantly. A black hole warps space and sucks shit in because of its incredible density. When it's still a star, the mass may be similar, but the density isn't enough to warp space.

Nice screwball. The star is pushing matter out against it's own gravity. When it can no longer do that it starts to collapse. The minute the fusion process starts making iron the star is doomed, because iron doesn't fuse into anything, it just stays as mass.

Yeah...

[Gawdzilla Sama]

I think it may help if you think about it as a star in reverse. When it's still a star, it's pushing shit out constantly. A black hole is sucking shit in constantly. A black hole warps space and sucks shit in because of its incredible density. When it's still a star, the mass may be similar, but the density isn't enough to warp space.

Nice screwball. The star is pushing matter out against it's own gravity. When it can no longer do that it starts to collapse. The minute the fusion process starts making iron the star is doomed, because iron doesn't fuse into anything, it just stays as mass.

Yeah...

Your in-out analogy is faulty, that's all. In point of fact the gravity stays the same after collapses, it's just focused on a singularity insteads of a giant star.

[MiM]

However, one could still orbit it at a respectable distance with no ill effects, other than the intense radiation released if any in-falling matter spirals in...

As, of course, we are...

[FBM]

I think it may help if you think about it as a star in reverse. When it's still a star, it's pushing shit out constantly. A black hole is sucking shit in constantly. A black hole warps space and sucks shit in because of its incredible density. When it's still a star, the mass may be similar, but the density isn't enough to warp space.

Nice screwball. The star is pushing matter out against it's own gravity. When it can no longer do that it starts to collapse. The minute the fusion process starts making iron the star is doomed, because iron doesn't fuse into anything, it just stays as mass.

Yeah...

Your in-out analogy is faulty, that's all. In point of fact the gravity stays the same after collapses, it's just focused on a singularity insteads of a giant star.

My point was that as long as its outward pressure is greater than its gravitational pull, it's spraying the area with energized particles. A lot of them. But when the balance tips in the other direction, there's nothing but the pull of gravity. I suppose I could have expressed it more clearly, but I was almost late for class.

[Gawdzilla Sama]

Anyway, you're right on that part. But talking about something that freaked Einstein isn't going to end well for me.

[Xamonas Chegwé]

But why would that happen once it becomes a black hole and not before? It's still about the same mass (or less, presumably) with (presumably) the same gravitational pull and still a similar distance away from said other stars as it was before.
I don't geddit.

There is a distance from the black hole called the event horizon. Anything, even light, that is closer to the hole than this cannot escape its gravitational pull. A star of the same mass has a larger radius than the event horizon. So, in effect, you can't get that close to it without being inside the star!

And then there is Hawking radiation. Black holes actually emit particles! And they eventually "evaporate"! Perhaps. Nobody has proved it yet - but if Steve Hawking says it happens, who am I to argue?

[FBM]

Hawking said his previous, long-held belief that everything swallowed by a black hole was lost forever was the “biggest blunder” of his scientific career.

http://www.latimes.com/news/science/sci ... 4203.story

[JacksSmirkingRevenge]

Something to do with the fact that information can't be destroyed?

[Xamonas Chegwé]

Something to do with the fact that information can't be destroyed?

Yep. That and entropy. If a black hole is stable and uniform, entropy decreases as matter is drawn into it. This breaks one of the fundamental laws of thermodynamics - so Hawking and others started looking a little more closely...

[PsychoSerenity]

If a black hole is stable and uniform, entropy decreases as matter is drawn into it. This breaks one of the fundamental laws of thermodynamics - so Hawking and others started looking a little more closely...

I don't see why that shouldn't be the case though. As I understand it the second law is essentially geometric probability, - but if the forces in a black hole simply break the geometry of the universe, extending it to infinity, why can't the probability reach one?

If that's a silly question, or a complete misunderstanding of something, don't worry about it, - it's all well beyond me at the moment.

[Gawdzilla Sama]

Something to do with the fact that information can't be destroyed?

Ha! I wrote down my password yesterday and it's nowhere to be found.

[Xamonas Chegwé]

Something to do with the fact that information can't be destroyed?

Ha! I wrote down my password yesterday and it's nowhere to be found.

It's pa$$word - same as you always use. And don't ask me to remind you again!

[Gawdzilla Sama]

Something to do with the fact that information can't be destroyed?

Ha! I wrote down my password yesterday and it's nowhere to be found.

It's pa$$word - same as you always use. And don't ask me to remind you again!

About what?

[Xamonas Chegwé]

Something to do with the fact that information can't be destroyed?

Ha! I wrote down my password yesterday and it's nowhere to be found.

It's pa$$word - same as you always use. And don't ask me to remind you again!

About what?

Just take some more of your pills...