Quote (Azrad @ Jan 15 2013 09:30pm)
The process where a star implodes and ends up ejecting a large amount of mass happens even when a black hole is not formed. When a black hole is formed, the ejection of the mass takes place before creation of the black hole. Basically if there is enough mass in a small enough region after the ejection, a black hole will eventually form. You see you are saying the black hole is the cause, and the ejection is an effect, but the black hole forms (if one even forms at all) after the ejection.... you have the cart before the horse.
You are talking about before a blackhole is formed, I am talking about AFTER the blackhole is formed.
I never said stars, I said singularity which is the center of a blackhole.
Quote (Azrad @ Jan 15 2013 09:30pm)
Black holes don't really collapse. Any region of space that contain more than a certain amount of mass becomes a black hole. A black hole has a fixed size for its mass, and to change this size, mass has to be either added (throwing stuff into the black hole), or removed (much more complicated process, but it seems like this is also possible). This is one of the very unusual features of a black hole, that it's size is fixed by just its mass. If you know the mass of a black hole, then you know its size. If you know its size, then you know its mass. This is very weird compared to our regular lives where you might have a very small 10 pound weight, or a very large box that weighs less than 1 pound.
Blackholes DO collapse, whatever you heard is nothing but guesses, no one knows for sure what happens beyond the existence of a blackhole.
Theres actually a couple of explanations out there (again guesses) about why they CAN collapse.
Also by "collapse" I mean that field stops existing by the explosion of its singularity, which is what we call the "bigbang"
When I refer to dark matter Im talking about the space in between galaxies AND outside big groups of galaxies which is where you "find" most of the dark matter.
See, heres what:
One star
It implodes
Creates blackhole
Sucks up tons of matter
Singularity explodes
Expands and the matter it releases bumps away the other existent matter surrounding it
Because it comes out strong off the explosion, so it bumps.. but some will be attracted back to it because of the gravity off its mass, thats why different shapes and sizes of galaxies
Also galaxies have a spiral effect out of these bigbangs and bumps.
This matter is transformed into stars and planets.
A galaxy is born.
Mass as gravity
Matter as glue
Matter doesnt "glue" to dark matter (besides interacting with it)
See dark matter as water and matter as oil.. the oil will move through the water but never get attached to it, however it gets attached to more oil.