Question on Black Holes?

Question

Do black holes start out as stars that collapsed on themselves or do black holes come about another way?

Answer 1

There are 3 different types of black holes --

Plain ol' ordinary black holes. These are formed when very massive stars implode (...collapse in on themselves...)

Super-massive black holes. The origin of these isn't well understood, but most spiral galaxies, like our Milky Way, have a super-massive black hole at their centers.

Micro- or mini-black holes. None of these has ever been found, but it's thought that these very tiny black holes might have formed shortly after the Big Bang.

Answer 2

Well, the mass of a star dictates it's death. How fast a star forms dictates it's life.

If a LOT of mass comes together slowly, it's more likely to become a very large, massive star. Stars that are formed with many mixtures of materials (iron, sulfer, carbon, etc) tend to be dwarf stars.

After the very large star finally ignites, (when enough mass have driven the pressure & and internal heat high enough), it begins burning hydrogen into helium. All stars do this.

With enough mass, the helium will also begin to fuse into Carbon. So, you have an inner core of carbon, an outer core of helium, and the rest of the stars' hydrogen mass.

Again, with enough mass, the carbon will flash and begin fusing into Sulfer. And, so on - all the way up to iron. Iron is the last, heaviest element a star will make, because it's the heaviest element that can be formed while releasing energy. All elements heavier than iron require more energy to make than it releases.

So, you have a star that looks like an onion - maybe 12 to 24 layers of different elements, all fusing at the same time.

*until*.... all it's mass has been fused. Suddenly, and all at once, the energy produced by fusion is gone, and with it the force to keep the star "inflated" to it's natural size. The only thing left is the immense gravity of the huge star - and it collapses in on itself.

This sudden overpressure creates a tremendous explosion - a supernova, that blows off much of it's mass - and compresses the core. The core can be so compressed that the electrons of the atoms are crushed into the protons - forming a mass of nothing by neutrons - a neutron star. If the force of the explosion and the mass great enough, collapse doesn't have to stop there - it continues until it becomes a dimensionless point in space - a black hole.

Answer 3

Yes, black holes are collapsed stars, but not just any.. Takes giant star many times larger than the sun to make one.. Its made once the star is at the super nova stage.. Its mass, thus its gravity becomes so great the outward explosion loses out to the inward pull of gravity and collapses inwards forming a singularity i.e. the heart of a black hole...

Answer 4

Black Holes are thought to be Stars that burn out of energy, grow then collapse...

Answer 5

Collapsing stars is the way the imagination has lead our scientist to believe but as this is all totally theoretical at this time, I would not spend a great deal of time worrying about it. Not a year goes by that we do not find out that something we were taught as fact based on these speculations is incorrect. Accept it as the latest opinion only.

Answer 6

They start out as a very large star collapses. As the mass starts to fall toward the center it is accelerated and as the speed approaches the speed of light the mass will increase even Moore . The process is self accelerating,and may give us an actual value for a mass of infinity.

Answer 7

You are correct, a star larger than our sun collapses upon itself.

This can result in a neurtron star, black hole, or even a magnetar.

Answer 8

the most massive black holes are thought to be the ones that could reside in the center of every galaxy.