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 WMAP or Planck Maps (cartesian projection)
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Graduate Did Antimatter Annihilate Matter During the Big Bang?
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Graduate Is Quantum Cosmology a Viable Path to Understanding the Universe?
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Graduate Is the universe an adiabatic system?
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Graduate Cosmology: Static Universes and Negative Curvature
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Graduate Why not an eternal and infinite space?
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Graduate Will a Rocket Reach a Distant Galaxy Moving Away Due to Space Expansion?
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The problem with the "Big Bang" .
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Graduate How Did Quantum Fluctuations Contribute to the Creation of the Multiverse?
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Graduate Can Life Exist in the Universe or Multiverse After the Big Crunch?
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Graduate A Brief History Of Time (Stephen Hawking) FAQs -- Big Bang & Multiverse question
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Graduate Baryon acoustic oscillations and sound horizon
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High School How big does a mass have to be before gravity
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Graduate Boltzmann equation for the early Universe
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Graduate Time - How Long was the first second?
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Undergrad Why are there galaxies everywhere we look?
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Graduate Remind me why FLRW curvature can't switch between cases
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High School Can Small Bangs Create Mini Universes?
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Graduate Could Dark Matter be composed of neutrons?
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Graduate Can indirect searches for DM provide insights into candidate particles?
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Graduate An article on a possible alternative to dark energy
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Graduate Can Inflation Avoid Selfreproduction?
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Graduate Steinhardt 16 Dec on inflation (+alts) and spirited debate
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Graduate How can we sure that physical laws are always the same in al
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Graduate Cosmic rest frame, comoving distance, and proper distance
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Graduate New Planck mission results, Ferrara December 1-5
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Where Can You Explore the Universe from Planck Scale to Cosmic Scale?
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Graduate Expanding Universe: Is Kinetic Energy Behind Acceleration?
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Graduate Radical new take on *uni*verse questions by Smolin, could be important
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Graduate Question about gravity and the shell theorem
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Graduate Do quantum fluctuation particles create gravitational effect?
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Graduate Could Dark Matter Be the Source of Anomalous X-ray Emissions?
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Graduate Physical meaning of max. proper distance at time of emisson
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Undergrad Energy cannot be created. Then where did it all come from?
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Graduate Why Is the Universe Not Symmetrical?
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Undergrad Is the tetrahedron the building block of the universe?
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Graduate Constants linked to the observable universe, not whole
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Graduate Understanding Horizon Distance in Axion Cosmology Model
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Graduate Disappearance of dark matter since the Big Bang
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Graduate Naive Question regarding Galaxy Rotation Curves
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Graduate Dark Matter and extra dimensions
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Graduate Cosmic rest frame, proper distances and comoving distances
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Reflect Cosmic Rays: Materials for Mirrors
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Graduate Field equations Einstein-Gauss-Bonnet action
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Graduate Is Inflation the Only Solution to the Homogeneity Problem in Cosmology?
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Graduate Van Flandern's paper on "Speed of Gravity", question.
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Graduate Expanding universe and thermodynamics
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Graduate Why Are We Here Right Now Instead of Billions of Years Later?
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Undergrad What is the fate of the universe?
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Undergrad What is the correlation between the age and size of the universe?
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Graduate Smolin dispelling false impressions of the singularity
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Graduate Is the Weyl Curvature Hypothesis a Viable Alternative to Inflation?
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Undergrad Gravitational Binding Energy vs total mass energy
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Graduate Observational data for evolution of Hubble rate
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Graduate Anything actually physically infinite within the universe?
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Graduate Relativistic Degrees of freedom g(T)
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Graduate Do you know Dragan Hajdukovic's models work?
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High School Can we decrese the timegap of space telsecope images?
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Graduate Detection of motion of non characterised particles
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Graduate Simple thought Experiment, Straight Line between 2 Distant Points
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Graduate Universe's Informational Content and the Big Bang
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Graduate Saha equation (experiment verification?)
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Graduate Inflation & Its Effects on Universe's Expansion
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Graduate The scale factor in flat FRW model
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Graduate How to Measure Perpendicular Peculiar Velocity in Galaxy Simulations?
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Graduate Entropy of the initital state of the universe
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Graduate Is Space-Time a Continuum or a Physical Object?
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Graduate If the speed of light was greater, how would it show up?
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Graduate Why is the Cosmological Redshift z Confusing?
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Graduate About the effects of relativity when measuring the age of the universe
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Graduate Is there a boundary present for our universe?
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Graduate How Is the Age of the Universe Measured Given Relativity and Expansion?
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Undergrad About the size of the Universe and distance between galaxies
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Graduate How do E Folds relate to real distance?
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Does anyone NOT believe heat death is the final destination?
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Graduate Problem with Surface Brightness & cosmological parameters
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Graduate How to understand Friedman equation
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Graduate Excluding a simple dark matter candidate
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Undergrad Future of Universe: Big Freeze, Big Rip, Big Crunch, Big Bounce?
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Graduate Why can the universe be expanding inward away from point of singularity (POS)?
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Undergrad Our galaxy is one of the biggest
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Graduate Half of All Stars in Galactic Halos: Potential to Rethink Mass Estimates?
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Graduate Pairwise velocity dispersion in Cosmological simulations
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Graduate Does the Universe always have the same mass, or can it leak into other realms?
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Graduate Interstellar the movie and real physics
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Undergrad Unraveling the Mystery: The Big Bang and the Origin of the Universe
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Graduate What Theories Exist About the Edge of the Universe?
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Graduate Cosmological Curvature: A $10 Bet with My Professor
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Graduate How Did Supermassive Black Holes Grow So Massive So Quickly?
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Graduate Explaining the Big Bang: The Science Behind the Universe's Rapid Expansion
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Graduate Is Dark Energy the Answer to the Accelerating Universe and Big Bang Conundrums?
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Graduate What is the Breakdown of the Milky Way's Mass?
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Alan Guth:Inflationary Cosmology live stream 10/31
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Undergrad How Can We See the Light from the Big Bang if We Expanded from the Same Origin?
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Graduate Does Positive Curvature Dominate FRW Cosmological Models in Inflation Theory?
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Undergrad What Came Before the Big Bang?
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Graduate What Causes Red Shift in Cosmology: Expansion of Space or EM Red-Shift?
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Graduate Big Bang ruled out as origin of lithium-6
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Graduate Cosmological redshift: Where does the energy go?
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Graduate Could the Event Horizon of black holes be the edge of expanding universes?
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