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 What causes red shift in the universe?
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Undergrad Expanding Universe: Verifying Space Expansion Through Galaxies
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Graduate How/why are pocket universes created during eternal inflation?
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Graduate Zero-point energy density evaluation
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Graduate Stars that look older than the universe
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Graduate Question regarding to acceleration in the rate of expansion of our cosmos
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Graduate Sinking instead of expanding universe?
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Graduate FRW pertubations in overdense and underdense regions
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Graduate Non equilibrium boson distribution function
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Undergrad Which Has A Stronger Gravitational Pull - A Black Hole or Neutron Star?
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Graduate Why two terms "Dark Energy" and "Dark Matter"
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Graduate Photon's History: Quantum Expression for Energy Loss with Scale Factor Increase
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High School Trying to understand the universe .possible at 13 years old?
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Graduate Can black holes hold the key to the origin of our universe?
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Graduate Origin of our universe 4D black hole
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Graduate Dark matter possibly explained by axions?
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Graduate Why do large elliptical galaxies not collapse due to their gravity?
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Undergrad Is Infinite Space the Key to Understanding the Big Bang?
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Graduate Does cosmic time (or comoving clock) run at the same pace at all times?
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Graduate Are High Z SNe Brighter than LCMD Predicts?
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Graduate Current Research on Communication Between Universes?
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Graduate Why do black holes vanish over time?
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Graduate Dark Matter does not exist, what do you think?
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Undergrad What Are the Mysteries of the Universe We Still Need to Understand?
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Unraveling the Expansion of Our Universe: Seeking Answers | Nautical Thoughts
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Graduate What is the true purpose of inflation in the early universe?
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Graduate What is the Visible Mass of the Milky Way?
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Graduate Galaxy Formation: Searching for Primordial Origins
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Graduate Can There Be Time Without Space? A Question for Discussion
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Graduate Why does light travel radially in the FRW universe?
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Graduate Is there an unseen part of the universe older than the known universe?
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Graduate Big Bang, big rip, lQc, has anyone ever run a computer simulation?
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Graduate Why does inflation generate gravity waves?
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Graduate Was the CMB Radiation Predicted or Post-Dicted by Big Bang Cosmology?
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Undergrad Does the observable universe support the idea of circular math?
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Graduate Dark Matter: Why doesnt dark matter coalesce 'into' Ordinary Matter - Repost
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Undergrad Black Holes Colliding: Evidence & Expectations
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Graduate Mass Profile in Elliptical Galaxies
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Graduate Where Is Dark Matter in the Universe?
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Graduate I don't believe in singularities
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Graduate Is the Universe Actually Collapsing Instead of Expanding?
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Graduate Making basic astro/cosmo calculations easy with google calculator--examples
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Undergrad Is it accurate to say 99% of the universe is pure black with no sound?
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Graduate When Was the Universe's Expansion Rate Zero?
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Graduate Dark Energy an effect of inhomogeneity?
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Graduate Beginning of accelerating expansion
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Graduate Missing low-metalicity Red Dwarves
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Graduate Why is temperature inversely proportional to the horizon's area?
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Graduate How did massive black holes form and grow in the early universe?
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Graduate Unraveling the Mysteries of Dark Energy and Dark Matter in the Universe
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Graduate Where can I find an updated Milky Way density profile for my simulation?
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Graduate Infinite Regress | Why is everyone telling me I am wrong?
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Graduate Is hyperbolic space consistent with homogeneity?
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Graduate Can another blackhole pull you out of the event horizon of a blackhole
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Graduate Horizon distance at last scattering surface
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Graduate Spiral Galaxies as Gravity Lense
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Graduate Explore Laniakea: The Supercluster Earth is in
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Graduate Empty Space: Energy, Warping, Bending, & Gravity
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Graduate Carbon based Life vs. Plasma based Life.
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Graduate Rethinking the origins of the universe
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Graduate What happens beyond 13,7 billion light-years?
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Graduate Dark energy: is it just "lost" light?
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Graduate Where is the future if everywhere is the past?
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Graduate Age Universe: Unobservable Matter & Galaxies
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Graduate The Cosmological Constant with Inflation is not Constant
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Graduate Analysis: Why BICEP2 & PLAnck Are in Tension
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Graduate Helium formation during nucleosynthesis
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Graduate Proof That Universe Can Form Spontaneously From Nothingness
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Graduate Are Redshifts Used to Specify Locations in Cosmology?
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Graduate Multipole Map with Healpix routines
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Graduate Physical infinities, what are the limitations?
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Graduate Is Planck Dust Modeling Consistent with BICEP2 Assumptions?
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Graduate Why is the Universe Expanding and Not Contracting?
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Graduate Neutron Star at Near Light Speed
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Graduate Questions re: the edge of the observable universe
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Graduate Modern Cosmology: Fine Tuning Problem | Adarsh
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Graduate Time derivative of Hubble parameter
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Graduate Primodial power spectrum of scalar perturbations
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Graduate Why does spatial curvature become observable only in late universe?
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Graduate Infinity and mathematical phyisics
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Graduate Mathematical Analysis on Cold Dark Matter
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Graduate Fluctuations of density in De Sitter Space
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Graduate Rarely asked question: converting 1/(Hubble time) to km/s per Mpc
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Graduate How Can the Distance Between Two Points Exceed the Size of the Universe?
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Graduate Why is the universe expanding at an accelerating rate?
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Graduate Thanks for any thoughts,Could Black Holes Pump Energy into the Quantum Foam?
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Graduate I'm new this -- super force splitting into weak and strong forces?
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Graduate Looking Again at the Balloon Analogy
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Graduate Could the Universe Be Expanding as Wave Fronts?
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Graduate Expanding space thru matter vs matter thru space
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Graduate Comoving Dynamics: Overcoming STR for >c Recessional Velocities
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Graduate Questions about the universe I resolving.
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Graduate Event horizon ad the age of our universe
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Undergrad Universe is expanding like a balloon
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Graduate What is the evidence for the multiverse?
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Graduate Is Supersymmetry still viable in cosmology?
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Graduate Big Bang : Singularity or Singularities?
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Graduate NFW Dark Matter Halos and Virial Radius
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Graduate Possible for the Big Bang to have come from The Universe before it?
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Graduate What Are the Biggest Questions About the Big Bang and the Universe?
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