Questions tagged [cosmological-horizon]
Questions about the size of the observable universe.
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Are there ways to estimate size of the "whole universe"?
Words escape me, but by "whole universe" (I think) I mean everything that's spatially connected to the observable universe in a conventional sense. If there is a better term for it, please let me know!...
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How strong is the gravitational stretch we experience from the edge of the universe?
How much gravitational effect do we experience (e.g. maybe -.00001 G or smaller) from the edge of the visible universe? By edge of the visible universe, I am talking about the region of the cosmic ...
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Is Webb or any near-future telescopes like ELT capable of observing redshift changes to confirm General Relativity?
The (Davis and Lineweaver (2003)) "Expanding Confusion" paper states that "the expected change in redshift due to cosmological acceleration or deceleration is only ∆z ∼ 10^(−8) over 100 ...
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Must time pass more slowly, relative to our inertial reference frame, inside galaxies that are currently located at half way to the Hubble Horizon?
Trying to understand simultaneity of events and time-dilation on a Universe scale, I would like to know must time pass more slowly, right now, relative to our current inertial reference frame, inside ...
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How many galaxies disappear beyond the Hubble Bubble horizon every year now? [duplicate]
The accelerating expansion of space means that the space between us and far away galaxies expands faster than light can travel through space. There is a horizon of possible observation beyond which ...
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What does black hole evaporation correspond to in the accelerating universe / black hole analogy?
In the same way, as a black hole emits Hawking radiation corresponding to its temperature
$$
T = \frac{\hbar}{r_{BH}}
$$
the accelerating universe can be described as all of the stuff falling ...
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