All Questions
Tagged with space-expansion black-holes
61
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Does the Schwarszchild solution require the cosmological constant to stop it from expanding?
When Einstein developed his field equations for general relativity, he attempted to apply them to the entire universe. He found the universe had to expand, which at the time was believed not to be the ...
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Big Bang Escape Velocity
When our entire section of the universe was in a single hot dark dense state, right before our big bang, what was the escape velocity?
user394592
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Would continuously increasing curvature of space explain seeming expansion of the universe? [closed]
Could expanding universe phenomenon be explained by slowly but continuously increasing curvature of space around masses like galaxies and galaxy clusters? In other words, I am curious whether the ...
- 113
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Ejected bodies, dynamical friction and dark energy?
I have a question after reading a couple of papers (https://arxiv.org/abs/1707.06220 and https://www.arxiv-vanity.com/papers/1102.0007/).
Here, the authors seem to indicate that when bodies like stars ...
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What would happen if two super-massive black holes collide faster than the speed of light? [closed]
I know objects can't move through space faster than light. But there's no law against the expansion of the universe increasing the distance between two objects faster than the speed of light. But this ...
- 101
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Hypothetically, could the interior of a black hole look exactly like the universe that surrounds us?
I do understand that we can't experimentally verify anything we imagine about the interior of a black hole.
If we were to apply what we know about the physics of the observable universe and assume ...
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What does it mean that "relativistic material becomes cosmologically coupled to the expansion rate" in the recent dark-energy black-hole paper?
The recent paper "Observational Evidence for Cosmological Coupling of Black Holes and its Implications for an Astrophysical Source of Dark Energy" has made a splash in the popular press. ...
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What does it mean for a black hole to be "filled" with vacuum energy?
I've read the recent news about non-Kerr black holes coupling to the universe's expansion rate, and it looks like an excellent fit to the data. From the paper, I understand that these black holes grow ...
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Does the rate of expansion of the universe depend on the mass or size of the galaxies?
Does the rate of expansion of the universe depend on the mass or size of the galaxies? How constant dark energy density affect the massive/lighter galaxies?
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Is there a universal conservation of information theory?
Specifically, is there a working theory from a perspective that relates cosmic expansion (recession?), the increasing total potential information density of the Universe (based on the simplified idea ...
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Could black holes be the reason for the expanding of the universe?
I would like to start be saying I'm no Physicist.
I was wondering if known and mostly unknown black holes could be the reason for the "expanding" of the universe.
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Black hole vs Dark energy
This is a follow-up question to this answer.
The original question was whether there is a maximum size limit to a black hole in our universe. The answer given was that if the event horizon coincided ...
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Is the expansion of the Universe absolute, or can it be relative?
Can the free fall conditions of an observer immersed in an intense gravitational field (for example) change the results of his measurements made about the expansion of the universe?
An observer in ...
- 441
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Is the gravitational tidal force equivalent to expanding space?
If you fall towards a black hole, the particles in front and the back of you, in the direction of the center, are accelerating away from you. So, seen from a freely frame, can we say that space is ...
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Fate of black holes in an accelerating expanding universe
If matter within the event horizon of a black hole continues to fall towards the singularity, won't there be a distant time in the future when the accelerating expansion of space is fast enough that ...
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