Cosmology Forum

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Join in expert discussion on topics revolving around cosmology. Cosmology is the origin, evolution, structure and eventual fate of the universe.
Undergrad Time Since Big Bang: One Moment Everywhere?
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Undergrad Trying to reproduce curves with angle of CMB anisotropies
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Undergrad Hawking points discovered in CMB
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High School Demystifying the Hubble Constant
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High School Is Our Universe a Causal Patch Stretched by Inflation?
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Undergrad Hawking Radiation and the Negative Energy Particle
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High School Is Earths' potential of 0 volts valid throught the Universe?
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Graduate CMBR anisotropy and cosmic abundances
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Undergrad Troubles understanding slow-roll conditions in Inflation
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Undergrad Dark matter "halo" is a "flattened disk" ?
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High School Our universe's entropy/size vs Bekenstein's theory
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High School Is There a Model That Includes Infinite Space and Finite Matter in Our Universe?
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High School Was the Big Bang simply "Distant Traffic"?
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High School Is our 3D universe a shadow of a 4D Universe?
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High School A Singularity in Semi-Classical physics too?
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High School How do we know that the universe is still expanding
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Graduate What is primordial non gaussianity?
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Undergrad Is Dark Matter Really Necessary in Our Understanding of the Universe?
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High School Are Antiparticles the Key to Understanding the Universe?
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Undergrad Big Bang Singularity vs Black Hole Singularities
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Graduate Energy conservation on Cosmological scales
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Undergrad Could the original size of the Universe be the Planck length
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Graduate How Does a Decreasing Higgs Field Influence the Evolution of the Universe?
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High School Gravitational waves and refraction patterns....
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High School What Causes the Phenomenon of Cosmic Inflation?
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Graduate Zero-Energy Universe: Stephen Hawking Explains
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Undergrad False vacuum and matter density
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Undergrad Understanding the Ly-α Forest for EnSlavingBlair
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Graduate Is there a reason the Big Bang would be secret?
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Graduate Is the Universe a Self-Similar Tesselation?
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Graduate What are the frontiers of cosmology research?
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Undergrad Inflation and density perturbations
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High School Hubble’s Constant Changes Over Time
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Undergrad Black hole vs mathematical singularity
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High School How large was the Universe at its moment of creation?
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Undergrad Entropy and contracting universe
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Undergrad Can Boltzmann Brains Form in an Infinite Universe?
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Undergrad If the Universe’s Mass was 100 At the Moment of the Big Bang....
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High School How does 400 sigma compare with 5 sigma?
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High School Big Slurp: What Is It and How Does It Work?
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High School Help with understanding a Friedmann flat universe
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Undergrad Curve fitting the luminosity distance and redshift data
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High School Could Gravitational Waves Allow for Time Travel?
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High School Does Negative Mass Impact Expansion in Vacuum Space?
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Undergrad Why was the early universe's entropy low?
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Undergrad Does the Uncertainty Principle imply a linear cosmology?
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High School Do multiverses follow the same laws of physics?
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High School Doesn't there have to be more than one observable universe?
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Undergrad Big Bang Singularity: Was It As "Infinitely Dense" As We Think?
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Undergrad Does red shift approach infinite near time zero?
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Undergrad Where Did the Universe's Antimatter Go?
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Undergrad Galaxy with no dark matter? (NGC1052-DF2)
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High School Threshold of gravitational pull over dark energy
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High School Bubble universes and infinite in extent
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Undergrad Have we measured the change in the red shift over time?
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High School The Future of the Universe: When Will It End?
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Undergrad Conservation of Energy on the Cosmological Scale
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High School Photon mean free path (regarding CMB black body assumption)
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Undergrad Cosmological Redshift and Heisenberg Uncertainty Principle
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High School How Did the Big Bang Happen If the Speed of Light Is a Limit?
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Undergrad SU(2) invariance implies isotropy?
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Graduate Multiverse reduction in the new Hawking/Hertog model?
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High School What is the GZK Cut Off Point and why does it happen?
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Undergrad Question about accelerating expansion
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Graduate Dark energy = cosmological constant, any problems with that?
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Undergrad Simulated Reality: Proving Our Universe Is Real?
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Undergrad Vertical axis of the CMB power spectrum
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High School Did the Big Bang create space and time?
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Undergrad What will happen to the Hubble value if dark energy is dynamic and decreasing?
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Undergrad "Centaurus A Contradicts Dark Matter Models"
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High School Mutually orbiting bodies in an isolated universe
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High School No Imbalance between Matter/AntiMatter
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Undergrad Why is a statistical explanation for Baryon Asymmetry wrong?
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High School The Universe without Cosmic Inflation?
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High School Lack of time dilation in type 1a supernova
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High School Are the 3 space dimensions "equal"?
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Undergrad Does dark matter contribute to my body mass?
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Undergrad Getting the wrong multipole for 1st acoustic peak
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Undergrad Shape of the universe, and a few other questions....
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Undergrad 10,000 black holes near Sagittarius A ?
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High School Are heliocentrism and geocentrism both correct?
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Undergrad How does one actually compute a correlation function?
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Undergrad Observational evidence against expanding universe in MNRAS
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High School How dense was the first starfield we might have seen?
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Undergrad The deviation of Universe expansion from general relativity
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High School What fraction of the matter in the universe is in black holes?
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High School Does Hubble's Law imply that galaxies are accelerating away
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Graduate Comoving distance, causality volume and entropy
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Undergrad Where are the Constants of Nature stored in Multiverse?
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Undergrad Quantum foam ruled out by distant quasars
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Undergrad Are there any local effects of Einstein-de Sitter expansion?
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Undergrad Calculating recession vs attraction
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Undergrad Inter-Bubble Connections in Inflationary Multiverse Models?
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Undergrad Has cosmic background radiation been measured underground?
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High School Documentary about Hawkings contributions to science
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High School Speed of Light Puzzle: Is c a Localized Value?
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Undergrad Is a galaxy's halo displaced dark matter?
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High School Gravity of Universe A Million Years Ago: Affect Us?
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High School How can particles escape from a black hole?
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Undergrad Why are non-relativistic particles not redshifted?
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