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 Could fundamental laws change in Dirac's Large Numbers Hypothesis?
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Undergrad Cross Section of DM: What Are the Particle Candidates?
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High School Expanding Space in the Lab: Investigating the Possibilities
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Undergrad Have I got the right picture for cosmological redshift?
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High School What is the black that we see in the night sky?
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High School How do we resolve the Boltzmann Brain problem
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High School Questions about the Timeline of the Big Bang
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Undergrad Would we ever be able to fully understand the laws of the universe?
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Graduate Implications of Symmetry and Pressure in Friedmann Cosmology
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High School Can we observe anything beyond the CMB 'wall'?
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High School Early Predictions of Hot Big Bang CMB: Gamov & Alpher
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Undergrad Is the Big Bang Actually a White Hole?
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Graduate New paper on the cosmological constant
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High School Does gravity become repulsive in a shrinking universe?
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Undergrad I computing the CMB Damping Tail
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Graduate Anisotropic Universe and Friedmann Equations
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High School Which rate of Universe expansion are we currently using?
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Undergrad Is the total energy of the observable universe constant?
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High School Looking for opinions on YouTube Fermilab videos
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High School Distance traveled by light accounting for expansion
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Undergrad New measurement of the Hubble Parameter
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Undergrad "It from Bit" and the multiverse?
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High School Universe rate of expansion: speeding up or slowing down?
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High School Rate of the expansion of the Universe and the Big Bang
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Undergrad Solving the Horizon Problem: 1 Source or 105?
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High School Is the Gamma Ray Burst Diameter Wide Enough to Engulf Our Solar System?
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Undergrad Did Wheeler consider Carter's anthropic multiverse?
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Undergrad Does Spatial Curvature Falsify Eternal Inflation?
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High School Our universe was connected to another universe?
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Undergrad Discrepancy in Hubble's "constant" and its implications
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Graduate Equilibrium point of matter and radiation density
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High School Questions about cosmic background radiation
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High School What is the size of the observable Universe?
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High School Age of the Universe at the recombination?
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High School Age of the Universe vs Age of the Stars
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Undergrad Any direct measure of Universe expansion via galaxy subtended angles?
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Graduate Part of the Hubble discrepancy can be explained by local underdensity
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Graduate Friedmann-Robertson-Walker Models
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Undergrad CMBR & Flatness: Mapping Universe Flatness?
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Graduate Is the Hubble Constant Truly Constant?
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Undergrad How Can We Interact with Dark Matter for Sci-Fi Novel?
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Undergrad What do "marginalized" or "marginalized error" mean? (contours - posterior)
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Undergrad Does the Strong Anthropic Principle have any equivalent specific model?
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Undergrad Some redshift from prism effect of a gravitational lens?
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High School Questions regarding expansion, the vacuum in space, and black holes
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High School When could life theoretically exist in any star system after the Big Bang?
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High School Can Hypothetical FTL Technologies Enable Travel to Other Bubble Universes?
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High School What is the important scale of things in the Universe?
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High School Dark Matter & BAO: How Does it Suppress Baryonic Oscillations?
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High School Examples of theoretical proofs overturned by evidence?
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Undergrad Chameleon Theory: Detecting the Particle with Astronomical Surveys
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Undergrad Question about the Cosmological Constant
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Undergrad Formula for the large-scale bias of galaxies
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Undergrad Is Infinity Possible Within Our Finite Universe?
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Undergrad Hubble's law and conservation of energy
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Graduate Forecast with Fisher formalism : loss or gain of information
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Undergrad Amount of energy inside a sphere of radius 1au around the Sun
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High School Particle Deceleration in Relativistic Jets?
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High School How do we know that the Universe is expanding?
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High School What is our understanding of dark matter?
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High School Can someone please explain this paragraph from A Brief History Of Time
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Undergrad What Justifies the Slight Preponderance of Matter Over Anti-Matter?
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Undergrad How is dark matter thought to have formed a network scaffolding?
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Undergrad Does the universe have a definite "size"?
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High School Expansion or contraction -- how do we know which?
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Undergrad Equation of state and density parameter
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Undergrad Cosmological constant and structure formation
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Undergrad Spacetime curvature and curvature index
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Undergrad Creation of our universe from zero energy?
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High School What is the probability that the Universe is absolutely flat?
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Undergrad Coherence length of velocity fields
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Undergrad Dark Matter not present in Galaxy when distance is Increased
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Undergrad Hubble's Law: Distance, Speed, & Upper Limit
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Graduate Cosmological models with variable EoS
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High School Is Dark Energy Born at the Big Bang or Continually Created?
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Undergrad Did Universal Physical Constants Exist at the Big Bang?
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Undergrad Can Merging Black Holes Have Infinite Kinetic Energy?
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Undergrad Qs re Cosmological Models Using Bayesian Probability Methods
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High School Is Dark Matter a Misunderstood Global Effect?
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High School Age of Universe: 13.8 Billion Years
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Undergrad Is the Universe a 3-sphere or a 4-sphere?
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Graduate Dark matter and energy explained by negative mass
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Undergrad What Innovative Coding Projects Can Enhance Your Understanding of Cosmology?
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Undergrad Why Does Wormhole Travel Take Longer Than a 'Regular' Path?
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Graduate Direct Detection of Cold Dark Matter
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High School Could Matter/Anti-Matter Annihilation Explain Dark Energy and Dark Matter?
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High School Is the Hawking-Hartle Euclidean approach confirmed by CMBR data?
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Undergrad What Future Experiments Could Confirm Extra Dimensions in Cosmology?
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High School Is 3D reality merely an illusion?
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Undergrad How Does Baryonic Matter Alone Affect the Universe’s Structure?
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High School Is the "Information Paradox" close to getting resolved?
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High School What Size Would the Universe Be if Compressed to Neutron Star Density?
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Undergrad What is the refractive index of the Universe?
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Undergrad How does the expansion of the Universe affect black holes?
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Graduate Analysis Paralysis: A Must-Read Paper on Cosmology Theory/Data
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Graduate Historical reprint/coverage papers requested
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Graduate Interesting video on infrared modifications to gravity
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Graduate Observational constraints on quarks in neutron stars
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Graduate What is the connection between dark matter and ordinary baryonic matter?
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Graduate How unitary cosmology solves the inflationary entropy problem
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