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Universe
New post in Universe
What is the limit of the universe?
June 1st, 2022
cosmology
space-expansion
universe
spacetime
Does a place without gravity exist in the universe?
June 8th, 2022
universe
gravity
Is the structural similarity between atoms ( smallest) and universe (biggest) a conincidence. Or there can a reason for this beyond imaginations
June 10th, 2022
atomic-physics
universe
Regarding possibility of infinitely many spatial dimensions
June 5th, 2022
universe
spacetime-dimensions
Can space be created or destroyed
June 1st, 2022
big-bang
spacetime
universe
How does an inflationary universe solve the Flatness Problem, Horizon Problem and Monopole Problem?
December 10th, 2020
cosmology
space-expansion
cosmological-inflation
universe
Our universe the surface of a 4-dimensional sphere?
June 21st, 2020
universe
astronomy
spacetime-dimensions
How does "space" expand?
March 31st, 2020
spacetime
space-expansion
universe
cosmology
What type of thermodynamic system is the universe?
June 10th, 2022
universe
multiverse
thermodynamics
Does the universe have an edge/boundary/barrier? If yes, what is at the edge?
June 8th, 2022
universe
topology
spacetime
cosmology
What is the wave length of the entire universe?
June 3rd, 2022
universe
wavefunction
wavelength
How fast are we moving when standing still?
June 1st, 2022
universe
cosmology
speed
relative-motion
reference-frames
What are the evidences of the big bang theory?
June 1st, 2022
spacetime
cosmology
universe
big-bang
Zero energy universe does not make sense
June 17th, 2022
general-relativity
universe
energy-conservation
cosmology
What is the amount of dark energy in the Universe, in joules?
June 8th, 2022
universe
dark-energy
dark-matter
How can the total amount of energy in the universe be zero?
June 9th, 2022
energy-conservation
mass-energy
universe
potential-energy
energy
Can we have a static point in the universe?
June 1st, 2022
cosmology
universe
spacetime
space-expansion
big-bang
What is entropy of the universe?
June 3rd, 2022
entropy
thermodynamics
cosmology
universe
How many particles are there in the entire universe?
February 20th, 2020
universe
particle-physics
cosmology
Atoms pop out of nothing/vacuum/pre-big-bang?
June 3rd, 2022
vacuum
universe
big-bang
Is the big bang a fact?
June 6th, 2022
universe
cosmology
big-bang
space-expansion
Effect of space time relativity on the age of the universe?
June 8th, 2022
twin-paradox
universe
cosmology
special-relativity
general-relativity
Is the universe 5 dimensional space-time or 4?
November 21st, 2021
universe
differential-geometry
general-relativity
spacetime-dimensions
spacetime
Are We Living in a Simulated Universe?
June 8th, 2022
computer
simulations
universe
Does light have an unending journey?
June 1st, 2022
visible-light
universe
Does the Universe have finite number of particles?
June 8th, 2022
particle-physics
cosmology
universe
If the universe is 3D, how is space-time like a "fabric"?
June 9th, 2022
general-relativity
curvature
universe
spacetime
How fast was the universe expanding during the inflationary period?
June 9th, 2022
cosmological-inflation
universe
What did the big bang "look like"?
January 13th, 2020
space-expansion
spacetime
cosmology
universe
big-bang
If energy cannot be created, how did the universe come into existence?
June 9th, 2022
energy-conservation
cosmology
thermodynamics
big-bang
universe
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