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Space-expansion
New post in Space-expansion
What is a layman explanation for why the wavelength of light increases when space itself expands?
August 1st, 2022
redshift
general-relativity
cosmology
space-expansion
Time dilation due to space expansion
August 17th, 2020
space-expansion
causality
event-horizon
time-dilation
faster-than-light
If the Big Bang theory is true, what caused it to explode?
September 17th, 2021
big-bang
space-expansion
black-holes
cosmology
gravity
Galaxies moving away at the speed of light
July 27th, 2020
homework-and-exercises
cosmology
speed-of-light
space-expansion
Can the universe be unbounded and yet have a finite amount of stars and galaxies?
August 1st, 2022
universe
space-expansion
spacetime
cosmology
How long does it take for expanding space to double in size?
August 1st, 2022
estimation
space-expansion
cosmology
homework-and-exercises
Is "A Brief History of Time" still up to date?
August 1st, 2022
resource-recommendations
universe
big-bang
space-expansion
cosmology
Cosmology constant as a negative pressure?
February 17th, 2021
pressure
space-expansion
universe
cosmological-constant
cosmology
Scale factor and age of the universe
July 29th, 2020
cosmology
space-expansion
universe
time
Do dark flow findings suggest we're moving towards distant gravitational anomaly?
May 11th, 2020
spacetime
galaxy-clusters
dark-energy
space-expansion
velocity
Dark energy vs. gravity
February 2nd, 2020
gravity
space-expansion
dark-energy
Looking out into the universe means looking back in time - how does that work?
August 1st, 2022
universe
cosmology
time
space-expansion
Where did the CMB come from? What is due to the matter/antimatter annihilation? Or perhaps the radiation released when the electrons decoupled?
August 1st, 2022
cosmic-microwave-background
cosmology
space-expansion
big-bang
Why is the hypersphere not seriously considered by cosmologists as the best model for the overall shape of the universe?
August 1st, 2022
cosmology
spacetime
universe
space-expansion
curvature
Time-like Killing vector in FRW metric?
August 1st, 2022
space-expansion
vector-fields
general-relativity
cosmology
differential-geometry
Is there anything physically infinite?
August 1st, 2022
space-expansion
ontology
epistemology
universe
Is false vacuum bubble nucleation possible in our universe?
October 27th, 2020
vacuum
space-expansion
universe
speed-of-light
cosmology
What is the universe 'expanding' into?
February 7th, 2020
universe
space-expansion
Is Hubble's constant really constant?
August 1st, 2022
terminology
space-expansion
cosmology
soft-question
Value of the Hubble parameter over time
January 23rd, 2020
universe
space-expansion
general-relativity
cosmology
Why cosmic background radiation is not ether?
September 25th, 2020
cosmology
space-expansion
cosmic-microwave-background
aether
speed-of-light
Estimating age of the universe by Hubble's law?
July 11th, 2020
cosmology
universe
space-expansion
Age of Universe from Friedmann Equation - How to actually solve the integral?
February 25th, 2020
general-relativity
cosmology
space-expansion
universe
big-bang
Redshift of distant galaxies: why not a doppler effect?
October 24th, 2020
general-relativity
redshift
doppler-effect
space-expansion
cosmology
Superluminal expansion of the early universe how is this possible?
February 21st, 2020
faster-than-light
big-bang
universe
space-expansion
cosmology
Elasticity of Space; How does the expansion of Space affect gravity?
April 12th, 2020
gravity
elasticity
space-expansion
space
Distance between two galaxies of different redshift
June 28th, 2020
redshift
general-relativity
cosmology
space-expansion
distance
Space Expansion vs. Relative Motion
January 16th, 2020
general-relativity
relative-motion
space-expansion
cosmology
Expansion of the Universe, will light from some galaxies never reach us?
August 9th, 2020
space-expansion
cosmology
spacetime
faster-than-light
universe
If the expansion of the Universe accelerates, why its horizon does not shrink?
August 1st, 2022
cosmology
space-expansion
de-sitter-spacetime
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