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Space-expansion
New post in Space-expansion
What is the limit of the universe?
May 17th, 2020
spacetime
cosmology
space-expansion
universe
Tired light red shift hypothesis
October 1st, 2020
cosmology
doppler-effect
space-expansion
Coordinates for FLRW metric
January 27th, 2020
reference-frames
cosmology
general-relativity
coordinate-systems
space-expansion
Is there a center of the Universe if the Universe is finite?
March 11th, 2020
universe
big-bang
space-expansion
Why is scale factor inversely proprotional to temperature?
August 1st, 2022
space-expansion
temperature
cosmology
Can the coordinate of the big bang point be calculated via observed universe or it is impossible?
May 14th, 2020
observable-universe
big-bang
space-expansion
universe
cosmology
Is there cosmological redshift within the Milky Way?
August 1st, 2022
milky-way
cosmology
space-expansion
doppler-effect
redshift
Could the acceleration of universe expansion be caused by gravity itself?
December 25th, 2020
gravity
cosmology
space-expansion
dark-energy
What is the extent of the universe?
August 1st, 2022
cosmology
spacetime
universe
space-expansion
How is "little $h$" measured in cosmology? The dimensionless parameter from the Hubble constant, $H_0$
August 1st, 2022
physical-constants
cosmology
astronomy
space-expansion
Does gravity slow the expansion of the universe?
August 1st, 2022
universe
cosmology
gravity
space-expansion
Expansion of the Universe: is new space(time?) being created or does it just get stretched?
October 19th, 2020
space-expansion
spacetime
cosmology
galaxies
What is the error in the measured value of the Hubble Constant?
April 7th, 2020
space-expansion
cosmology
astronomy
How does pressure relate to cosmological expansion?
August 1st, 2022
cosmology
astrophysics
pressure
space-expansion
Why did Einstein introduce expansion in his equation and later on it was patched?
February 19th, 2020
history
space-expansion
general-relativity
cosmological-constant
Why space expansion affects matter?
July 12th, 2020
space-expansion
general-relativity
gravity
Do photons make the universe expand?
August 1st, 2022
dark-energy
cosmology
radiation
space-expansion
How is dark energy consistent with conservation of mass and energy?
January 3rd, 2020
energy-conservation
space-expansion
dark-energy
cosmology
What evidence do we have that CMB is the result of the Big bang?
December 23rd, 2020
big-bang
cosmology
experimental-physics
space-expansion
cosmic-microwave-background
Does dark energy have gravity?
July 1st, 2020
space-expansion
cosmology
dark-energy
Gravitationally bound systems in an expanding universe
November 5th, 2020
newtonian-gravity
space-expansion
gravity
cosmology
Can we use redshift measurements to determine absolute velocity?
August 1st, 2022
redshift
cosmic-microwave-background
relative-motion
space-expansion
cosmology
If dark matter can't lose kinetic energy, then why is it not traveling at relativistic speeds?
July 11th, 2021
space-expansion
general-relativity
statistical-mechanics
cosmology
dark-matter
What does it mean that the universe is "infinite"?
June 14th, 2021
big-bang
space-expansion
spacetime
cosmology
general-relativity
How Are Galaxies Receding Faster Than Light Visible To Observers?
January 18th, 2021
gravitational-redshift
galaxies
faster-than-light
space-expansion
cosmology
Since the CMB is the oldest thing we can see, how do we know for sure what happened before the CMB?
April 5th, 2020
cosmology
space-expansion
universe
big-bang
cosmic-microwave-background
What does a galaxy orbit?
June 5th, 2020
space-expansion
galaxies
cosmology
At what speed does our universe expand?
October 14th, 2020
speed-of-light
cosmology
space-expansion
universe
What has been proved about the big bang, and what has not?
August 1st, 2022
cosmology
universe
space-expansion
big-bang
popular-science
Hubble time, the age of the Universe and expansion rate
March 6th, 2020
space-expansion
cosmology
universe
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