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Cosmology
New post in Cosmology
How tall is the universe?
September 27th, 2022
cosmology
space-expansion
What is the limit of the universe?
May 17th, 2020
cosmology
spacetime
universe
space-expansion
Tired light red shift hypothesis
October 1st, 2020
space-expansion
doppler-effect
cosmology
Do all black holes spin in the same direction?
June 15th, 2020
black-holes
angular-momentum
cosmology
What came first, the Universe or the Physical laws that govern the Universe?
January 15th, 2020
cosmology
big-bang
laws-of-physics
Killing vectors in flat FLRW metric
June 26th, 2020
general-relativity
cosmology
differential-geometry
geodesics
What if the size of the Universe doubled?
February 28th, 2020
universe
physical-constants
cosmology
spacetime
Does isotropy imply homogeneity?
August 1st, 2022
general-relativity
spacetime
cosmology
symmetry
metric-tensor
When will the Hubble volume coincide with the volume of the observable Universe?
May 12th, 2020
general-relativity
cosmology
dark-energy
Why do physicists think that the dark matter is cold?
December 16th, 2020
universe
temperature
cosmology
dark-matter
Entropy of an empty universe
August 15th, 2020
entropy
cosmology
universe
Is most of the matter in the observable universe within galaxies?
August 11th, 2020
galaxies
dark-matter
mass
cosmology
Rotational relativity? Is there an universal frame of reference for rotation?
August 1st, 2022
universe
machs-principle
general-relativity
cosmology
reference-frames
'Doppler redshift' Vs 'Cosmological redshift'
December 12th, 2020
gravitational-redshift
doppler-effect
cosmology
Coordinates for FLRW metric
January 27th, 2020
general-relativity
cosmology
reference-frames
space-expansion
coordinate-systems
Does the uncertainty principle violate the law of conservation of energy?
November 2nd, 2020
energy-conservation
heisenberg-uncertainty-principle
big-bang
cosmology
quantum-mechanics
Nature of decoupling of matter and radiation
August 1st, 2022
cosmology
What is a maximal analytic extension?
August 1st, 2022
general-relativity
mathematical-physics
cosmology
black-holes
Physical laws prior the big bang (quantum fluctuations)
July 28th, 2020
cosmology
quantum-gravity
universe
big-bang
popular-science
Why aren't we Boltzmann brains in an infinite universe?
January 6th, 2020
cosmology
statistical-mechanics
universe
anthropic-principle
poincare-recurrence
Lookback Time & Age of the Universe Calculations
August 1st, 2022
cosmology
Do photons lose energy due to gravitational redshift? If so, where does the lost energy go?
August 1st, 2022
energy-conservation
photons
cosmology
gravitational-redshift
general-relativity
Why is scale factor inversely proprotional to temperature?
August 1st, 2022
temperature
cosmology
space-expansion
What is the most efficient way to destroy the universe?
August 1st, 2022
cosmology
What is considered now over astronomical distances?
November 11th, 2020
cosmology
time
reference-frames
coordinate-systems
Why was more dark energy created during the creation of the Universe than normal energy?
August 1st, 2022
dark-energy
energy
cosmology
big-bang
cosmological-inflation
Is heat death reversible by thermal or quantum fluctuations given an infinite time?
August 6th, 2020
quantum-mechanics
cosmology
entropy
Why can't "missing mass" (=dark matter) be photons?
August 16th, 2022
dark-matter
mass
photons
cosmology
Dirac Equation in General Relativity
August 1st, 2022
quantum-gravity
cosmology
general-relativity
quantum-field-theory
Is Dark Matter evenly spread out in the universe?
August 1st, 2022
cosmology
dark-matter
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