Question black holes

Apr 7, 2024
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Am i correct in saying that most of the galaxies, if not all are rotating around a super massive black hole and if so does that mean that black holes are eventually going to suck all the matter inside their galaxies like water getting sucked down a plug hole
 
That's one of those theories that should, but don't. We have several of those.

We still stick to the should but don't theories, and have other should theories to explain the don't theories.

We try to strike a balance of should and don't.

Our only understanding for this is our confidence in our perception of light. It's the only tool we have.

So basically, all these theories depend on that light perception. And I don't trust it.
 
Jan 2, 2024
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Am i correct in saying that most of the galaxies, if not all are rotating around a super massive black hole and if so does that mean that black holes are eventually going to suck all the matter inside their galaxies like water getting sucked down a plug hole
A black hole attracts (with gravity) in the same way as any other object ie objects fall towards the centre of attraction (the BH) but their speed compensates and the combination becomes an "orbit". How stable the orbit is is dependent on additional factors apart from any black hole influence (unless quite close to the event horizon).
The water down a plug-hole is under Earth's gravity (not the plug-hole centre). However, I think your analogy is good - if the water were to speed up its circular motion, it might not go down the plug hole.
 
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Oct 6, 2023
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The 'black hole' was invented to explain how the monstrous body of galaxies can rotate and drag their star families with them. Added to this was the 'dark matter' idea to explain how fast the outermost stars were whizzing around. So that's two dark invisble entities invented to explain the galaxy. Not a good start if you want me to believe in a GRAVITY Universe!

Our question shows what ridiculous conclusions these inventions lead to: "..most of the galaxies, if not all are rotating around a super massive black hole and if so does that mean that black holes are eventually going to suck all the matter...down a plug hole "

It is such nonsense but luckily scientists can prove it to their liking with mathemagical equations which we all accept...NOT! So what is a better, more logical alternative? I suggest the simplest electric motor ever discovered explains all the evidence. Michael Faraday demonstrated the homopolar motor in 1821. All he needed was an simple conductor, a magnetic field and a flow of electricity. So do we have that inside a galaxy? Certainly we do.

Every magnetic field in space is indication of a flowing current. Every galaxy is basically a disk of conductive ionised hydrogen (PLASMA). All three component parts needed for this motor to work. This negates the need for black holes and dark matter because it just works!
 
Apr 7, 2024
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A black hole attracts (with gravity) in the same way as any other object ie objects fall towards the centre of attraction (the BH) but their speed compensates and the combination becomes an "orbit". How stable the orbit is is dependent on additional factors apart from any black hole influence (unless quite close to the event horizon).
The water down a plug-hole is under Earth's gravity (not the plug-hole centre). However, I think your analogy is good - if the water were to speed up its circular motion, it might not go down the plug hole.
ah! i understand the fundamentals now, i was under the impression that the gravitational forces of the black hole eventually drew all the matter orbiting around it so close that it would cross the event horizon and be enveloped inside.

I was also under the impression that once attraction takes hold and anything that's pulled passed the event horizon and taken into the belly of the beast (so to speak) could never escape not even light could escape the massive gravitational forces, but Steven Hawking proved without a doubt that wasn't actually correct with what's now known as Hawking radiation.

My query now is, well i have two and the first is how are black holes created? and is the Hawking radiation or whatever else the black hole eventually burps out a characteristic of the certain amount of matter etc that's been ingested by the black hole or does the black hole eject stuff randomly or do we not know the answer to that question for certain at this time?
 
ah! i understand the fundamentals now, i was under the impression that the gravitational forces of the black hole eventually drew all the matter orbiting around it so close that it would cross the event horizon and be enveloped inside.
If the Sun were to suddenly become a bh, ignoring the gravity shock wave, no planet would see an altered course. The concentration of mass is (ie density) will not change its overall gravitational strength with changes to density. But what does change is the escape velocity at the surface. Schwarzschild derived from GR the size (density) and object must have so that the escape velocity is > c. That is the EH (Event Horizon). If no light can escape it will always be a dark region of space.

However, if there is gas orbiting this region, then particles will encounter friction and will work their way into the BH. This is how the first BH was found. There were x-rays being emitted that couldn't be explained (Cygnus X1), but the enormous friction at the point where the neighboring star was feeding the disk around the bh was found to be the source.
I was also under the impression that once attraction takes hold and anything that's pulled passed the event horizon and taken into the belly of the beast (so to speak) could never escape not even light could escape the massive gravitational forces, but Steven Hawking proved without a doubt that wasn't actually correct with what's now known as Hawking radiation.
Hawking radiation is only at the EH. A virtual particle can suddenly appear at the EH then split so that there is a tiny leakage of matter taking perhaps trillions of years to dissolve a BH.


My query now is, well i have two and the first is how are black holes created? and is the Hawking radiation or whatever else the black hole eventually burps out a characteristic of the certain amount of matter etc that's been ingested by the black hole or does the black hole eject stuff randomly or do we not know the answer to that question for certain at this time?
A massive star, say at least 20x that of the Sun, will go through a cycle where heavier and heavier elements will form due to fusion. Once the fusion produces iron, then energy is not produced. Worse, this process absorbs energy. This suddenly collapses the core of the star and.... bang.... you get a super nova. Since the core is still massive enough, it will crush itself into such a tiny space that an EH forms. Whether or not it continues to become a singularity is highly unclear given the bizarre physics of such a point.