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Originally posted by Vesayen
Lots of galaxies have super black holes in the center. While most of the solar systems will pass each other, not all will. More importantly depending on the angles they meet at, a number of solar systems could hit the black hole.....
Black holes don't have more pull than it's former mass. If a black hole was formed by 50 solar masses of stuff smacked together, it wouldn't have more pull than 50 solar masses.
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what is the nature of the relationship between the current ongoing expansion and the expansion during the inflationary "epoch"?
What is that supposed to mean?
During the inflationary epoch the expansion was driven exponentially by a postulated inflatonic scalar (?) field. At a certain point this interaction froze out (due, I suppose, to the drop in density caused by the expansion), and the expansion was dominated by the standard terms we know today (cold matter, radiation and dark energy)
thanks. So the standard terms we know today that describe the current expansion did not play a role in the inflationary epochs expansion? Maybe those terms would have had some effect in that short inflationary epoch but those effects would be infintesimally slight compared to the effects of the postulated inflatonic scalar field?
So, the processes that drove expansion in the post inflationary epoch are totally independant (I guess) from the process that drove expansion during the inflationary epoch. Does this mean that it would be possible to imagine a universe in which an inflationary epoch occured but which had standard terms that favored contraction following the inflationary epoch? In such a universe would their be any means of guessing when the inflationary epoch would have occured?
Or from another angle, would we have any knowledge of the inflationary epoch in our own universe if we were unable to observe and extrapolate from the presently observed ongoing expansion of the universe?
I can't wrap my imagination around the size of the galaxy. Then, all the galaxys in the universe. It's just too big to undersand the size. At least for me.
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Black holes don't have more pull than it's former mass. If a black hole was formed by 50 solar masses of stuff smacked together, it wouldn't have more pull than 50 solar masses.
And what about some of the super black holes which might have hundreds of solar masses? Not a significant portion by any means but it seems that numerous stars could hit the black hole, depending on how fast the two galaxies are moving through each other, the angle and their composition.
Originally posted by Ecthy
It is a sad reflexion on KH's attitude that people must now apologizse in advance for their lack of physics knowledge.
At least he is willing to enlighten...
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And what about some of the super black holes which might have hundreds of solar masses? Not a significant portion by any means but it seems that numerous stars could hit the black hole, depending on how fast the two galaxies are moving through each other, the angle and their composition.
Still not a major threat though.
That goes beyond pop science magazines.
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