If it's not a black hole sun, what is it doing coming and washing away the rain?
A Solar Black Hole
- Thread starter Dryson
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That wouldn't make it a black hole. Just a very massive star.
A sun cannot and does not have an event horizon unless all of its mass has collapsed into a singularity. An object can cross into an orbit too close or at too low of a velocity to escape, but that again does not make the star a black hole.
No they don't.
Why do you keep repeating this even though it's wrong?
Then it is, by definition, not a black hole.
That's because the density of the sun's inner layers is insanely high; light travels much slower in a medium than it does in a vacuum. There are places in the sun's upper core here SOUND actually travels faster than light.
You are attempting to describe a core collapse deep within a star that forms a singularity before the rest of the star shows any signs of its formation. There are alot of very basic problems with this theory, not least of which is the fact that the OUTER layers of the star have no gravitational effects on the core and therefore the collapse can only be caused by the pressure of the outer layers from nuclear reactions. This is part of the reason black holes are only believed to form from extremely energetic supernova detonations: nothing else in the universe actually produces enough pressure to collapse a stellar core to that density.
A black hole isn't really black, of course. It does emit Hawking radiation. Its effective temperature is inversely proportional to its mass and the power radiated is inversely proportional to its mass squared. The power radiated by a black hole of 10 solar masses is only 10^-30 W, so it is effectively zero. Its temperature is 10^-8 K, which is less than that of the CMB (2.7 K). It cannot lose mass by Hawking radiation until the CMB temperature becomes lower than its temperature as the Universe expands. In the current epoch, for a black hole to evaporate, its mass must be approximately 0.8% that of the Earth, which is less than the Moon's mass.
http://www.einstein-online.info/elementary/quantum/evaporating_bh
http://www.einstein-online.info/elementary/quantum/evaporating_bh
The question/headline of that post is misleading. UY Scuti has a VOLUME 5 billion times that one the Sun, not mass. This is pointed out in the comments on the page.
There's a lot we don't know about black holes, such as whether they destroy information permanently (Hawking's old tutor, Penrose, still thinks so I believe) and how to resolve the firewall problem.
https://en.wikipedia.org/wiki/Black_hole_information_paradox
https://en.wikipedia.org/wiki/Firewall_(physics)
https://en.wikipedia.org/wiki/Black_hole_information_paradox
https://en.wikipedia.org/wiki/Firewall_(physics)
I don`t really understand. It means that the mass of Scutti is so large that it draws all the nearest objects? As I also now that the red giant and according to it`s definition it expands as the burning inside of it is not so strong as it was earlier. So then it will become as black hole?
Jesus wept, the false meme is spreading.
Preaching I see. Looking for a free meal out of life?
Basically I am trying to make a comparison that a black hole and a sun are the same because some suns do in fact become black holes. If a sun never became a black hole then it would never have the potential to become one and would therefore never become a black hole.
Try harder. That comparison does not work. By your logic, living people and dead people are the same because living people eventually die.
But only the ones that have the potential. Everybody else lives forever.
Well, we've gotta aspire to something. Otherwise there would be no zombies.
The use of the word "become" in this post counters the title of your thread.
Personally, I think that coal and diamonds are the same because coal has the potential to become a diamond. And a block of marble is the same as the sculpture "David". And being a Presidential candidate is the same as being the President.
I recommend we slip over and put a gallon of crude oil in the OP's car. It's the same as refined gasoline, after all. Potentially.
I recommend we slip over and put a gallon of crude oil in the OP's car. It's the same as refined gasoline, after all. Potentially.
No, a black hole and a sun are not the same. It does not matter how frequently you say that, it is not so.
This sentence alone shows you do not have a lot of understanding of how to write. It is virtually nonsensical and is the sort of gibberish you repeatedly post and thereby bring down the contemptuous responses you receive.
If a sun never became a black hole, it is solely because it never had the mass to become one to begin with.
I don't know about that. It's conceivable that a massive enough star could be cannibalized by a companion black hole to the point that it no longer has enough mass to become a black hole itself.
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I'd give you a warning for trolling if that remark made any sense to me. I would advise you not to elaborate and move on really fast. You would also do well to focus on people's posts instead of their personalities.
If you read the article you'll realize what they are talking about is not remotely like what you suggested.
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