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.
The Mystery of the Pre-Big Bang Universe
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Graduate Was matter created during the big bang?
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Graduate What is the problem with the Big Bang Theory and seeing the early universe?
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Graduate Cosmological Redshift: Electron Energy Loss in Expanding Universe?
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Graduate Could the collapse of a black hole lead to the creation of a new Big Bang?
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Graduate Does BICEP2 kill Conformal Cyclic Cosmology?
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Graduate What Are the Dynamics and Time Scales of Dark Matter Halos?
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Graduate How can we predict a Big Crunch?
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Graduate Describe & explain the significance of the 3K CMB
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Graduate Calculating critical density of mass, from Hubble time, for exercise
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Graduate Does Dark Matter Surround Us Unseen?
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Time magazine spreads the horse manure
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Graduate Understanding Photon Thermalization and Its Impact on CMB Anisotropies
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Undergrad Help building an n-body simulation incorporating the speed of gravity
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Graduate How to Plot a Map Using Healpix and Real Data?
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Undergrad Expansion of space vs stuff just moving away
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Graduate Help understanding the Friedmann equations?
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Graduate Press Conference on Major Discovery - primordial B modes?
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Graduate Mass of Universe: Planck Time, Planck Mass & 65 kg
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Graduate Why not a flat but finite spatial universe?
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Graduate Behind the improbability of our universe
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Graduate When was (or will be) inflation confirmed?
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Graduate What if the Gravitational Constant were larger?
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Graduate If G is constant, why didn't the early universe collapse?
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Graduate Time, energy, information constants
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Graduate Does Measurement Affect Reality? Examining the Concept in Physics
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Graduate Regaining Causal Contact by passing Event Horizons
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Graduate Clarification on dark energy please
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Graduate What is the relationship between space and time?
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Graduate Understanding Superhorizon Dynamics in Cosmology: A Mathematical Perspective
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Graduate Metal packing structure and curved space
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Undergrad Cosmology vs. Physical Cosmology
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High School How do we know how old the universe is?
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Graduate The Measure Problem and the Youngness Paradox
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Graduate A thermal expansion coefficient of spacetime?
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Graduate FAQ-Is universe black hole: clarification request
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Graduate How Does the BICEP Measurement Indicate Inflation Near the GUT Scale?
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Graduate The Horizon Problem: Explaining Universe Isotropy
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Graduate Space/time curvature of the young universe?
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Graduate Understanding Primordial B-modes and Cosmic Inflation
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Graduate Last scatter by e-, light looks hotter, cooler, time, wavelength.
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Graduate How could inflation interact with recombination radiation?
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Graduate CMB polarization data plots, almost a vector field, then what?
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Graduate Closed, collapsing universe+only photons at first -> matter when hot?
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High School Indulge a poet a few questions about Big Bang?
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Undergrad Antimatter recreating the big bang
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Graduate Fast/slow Alfven waves in High/Low Beta Plasma?
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Undergrad Can a hypernova explosion last for years?
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Graduate FLRW Metric and Explaining the Role of Gravity in the Big Bang Theory
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Graduate Spin of Black Hole Directly Measured?
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Graduate What is the structure of a black hole's singularity?
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Graduate Is There a Mechanism for Creating Matter from Nothing?
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Graduate What is the grid of the universe and how does it explain the bending of space?
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Graduate Why is the scientific community divided on the existence of dark matter?
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Graduate What is the Rationale Behind Eternal Inflation?
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Graduate Could universe be a blackhole inside a white hole?
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Graduate Good books on superclusters and voids?
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Graduate Thermo/hydro visualization of the Cosmos
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Graduate DM Exclusion Plots: Investigating WIMP Mass & Cross Section Relations
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Graduate Are We Closer to Finding Elusive Gravitational Waves with New Search Methods?
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Graduate Spatial infinity and matter-energy density
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Graduate Is the Geometry of the Universe Determined by Its Density?
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Graduate Good reviews about dark matter candidates?
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Undergrad Slow roll inflation -layperson question
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Graduate The expansion of the universe, evidence of a 4th spatial dimension?
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Undergrad How can space itself move/expand
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Graduate Will Dark Energy Eventually Dominate Dark Matter in the Expanding Universe?
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Graduate Gravity of Dark Matter - matters?
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Graduate Could 5-Dimensional Bubbles Explain the Big Bang?
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Graduate SN1a under fire as standard candles
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Graduate Could spacetime be a condensate?
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Graduate Contracting Confusion: black holes and event horizons
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Undergrad What is the scientifically accepted shape of the universe?
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Graduate An infinite universe with shape?
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Undergrad Age of the Universe and time duration
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Undergrad Big Bang Expansion: Is There A Centre Of The Universe?
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Graduate Why Was the Universe Smaller Than a Proton Pre-Big Bang?
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Graduate Does inflation theory have any confirmed predictions?
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Graduate Gravity & Virtual Particles: Does it Increase Temperature/Radiation?
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Graduate Black hole similar to pre universe
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Graduate Alan Guth thought experiment about negative energy and gravity
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Graduate Is There an ISW Potential During the Matter Dominant Era?
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Graduate A Potential Test for Quantum Gravity: Analysis of Results from arXiv:1401.6562
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Graduate What Is the Next Step in Inflation Theory?
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Graduate Is Asymptotic Silence in Loop Quantum Cosmology the End of Time?
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Graduate Theories on Big Bang Expansion & Origin
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Graduate Is the LCDM Model in Trouble with the BigBOSS Project?
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Graduate Negative gravitational energy - negative energy gravitons?
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Undergrad How we know the universe has a beginning
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Graduate Much ado about nothing? Local void & LCDM
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Graduate Gravitational Lensing: Is He Right or Wrong?
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Graduate About completeness of the Friedmann equations
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Graduate Is there a reason to believe there is more matter than anti-matter ?
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Graduate What is standard early inflationary cosmology?
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Graduate According to the inflation theory
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Graduate How Does the Integral's Limit Affect the Dark Energy Density Equation?
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Graduate Shannon Entropy and Origins of the Universe
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Graduate Temperature of CMBR compared to galaxies in general
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Graduate Anthropic Principle and Infinitely Minute Variations
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High School Northern And Southern Hemisphere Of The Unvierse
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