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Space-expansion
New post in Space-expansion
Hubble's law and conservation of energy
June 19th, 2020
energy-conservation
universe
space-expansion
cosmology
spacetime
Why is the Cosmic Microwave Background evidence of a hotter, denser early universe?
June 29th, 2021
cosmic-microwave-background
big-bang
universe
space-expansion
cosmology
Redshifting of Light and the expansion of the universe
January 12th, 2020
general-relativity
energy
space-expansion
energy-conservation
electromagnetic-radiation
Why is the observable universe so big?
July 30th, 2020
faster-than-light
cosmology
universe
space-expansion
Why did the universe not collapse to a black hole shortly after the big bang?
November 7th, 2020
cosmology
black-holes
space-expansion
big-bang
singularities
Can space expand with unlimited speed?
September 27th, 2020
cosmology
universe
big-bang
space-expansion
faster-than-light
How does the Hubble parameter change with the age of the universe?
August 1st, 2022
general-relativity
cosmology
space-expansion
metric-tensor
Is the Cosmological Constant locally zero?
October 22nd, 2020
cosmology
astrophysics
space-expansion
cosmological-constant
Is the temperature of the universe rising?
December 10th, 2020
cosmology
temperature
space-expansion
universe
observable-universe
As the universe ages, will we see more stars or less?
August 1st, 2022
observable-universe
space-expansion
universe
cosmology
Is there any "Cosmological Principle"?
August 1st, 2022
symmetry
reference-frames
space-expansion
cosmology
What is the theoretical limit for farthest we can see back in time and distance?
August 1st, 2022
telescopes
cosmology
space-expansion
Why isn't an infinite, flat, nonexpanding universe filled with a uniform matter distribution a solution to Einstein's equation?
March 21st, 2021
cosmology
general-relativity
cosmological-constant
space-expansion
If space is "expanding" in itself - why then is there redshift?
August 1st, 2022
cosmology
spacetime
space-expansion
redshift
Would the emission lines of a very distant galaxy show not many traces of heavier elements as that part of the universe was very young?
January 31st, 2022
space-expansion
spectroscopy
metallicity
astrophysics
cosmology
Why does space expansion not expand matter?
August 1st, 2022
space-expansion
atoms
popular-science
matter
cosmology
If the universe is expanding, what is it expanding into?
August 28th, 2020
faq
space-expansion
big-bang
universe
energy-conservation
How can a quasar be 29 billion light-years away from Earth if Big Bang happened only 13.8 billion years ago?
September 21st, 2020
space-expansion
cosmology
universe
big-bang
faster-than-light
Does the amount of gravitational potential energy in the universe increase as it expands?
August 1st, 2022
general-relativity
cosmology
energy-conservation
universe
space-expansion
How far away must a galaxy be for its light never to reach us due to the expansion of the universe?
March 31st, 2020
cosmology
universe
space-expansion
faster-than-light
How did the universe shift from "dark matter dominated" to "dark energy dominated"?
August 1st, 2022
cosmology
space-expansion
dark-matter
dark-energy
Is the amplitude of the Cosmic Microwave Background (CMB) correctly predicted or just its spectral shape?
August 1st, 2022
electromagnetic-radiation
cosmology
space-expansion
thermal-radiation
cosmic-microwave-background
Why does CMB radiation propagate towards us?
August 1st, 2022
space-expansion
cosmology
cosmic-microwave-background
big-bang
What experiments, other than Hubble Expansion, support the Dark Energy theory?
August 1st, 2022
space-expansion
experimental-physics
cosmology
dark-energy
Misconceptions about the universe - Hubble Sphere
August 1st, 2022
cosmology
event-horizon
space-expansion
How long ago was the Universe small enough for interstellar travel?
August 1st, 2022
big-bang
estimation
universe
space-expansion
cosmology
Given that matter cannot escape a black hole, how did the big bang produce the universe we see today?
August 1st, 2022
big-bang
cosmology
black-holes
space-expansion
singularities
Did the big bang create an infinite number of photons?
August 1st, 2022
electromagnetic-radiation
space-expansion
cosmic-microwave-background
cosmology
photons
Does time expand with space? (or contract)
August 1st, 2022
dark-energy
space-expansion
time
spacetime
general-relativity
Why haven't we seen the big bang?
August 1st, 2022
space-expansion
universe
spacetime
cosmology
big-bang
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