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 Why does this redshift v. light travel time equation work?
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Undergrad How to Understand the Primordial Power Spectrum in TASI Lectures on Inflation?
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High School Why isn't Dark Matter involved in Weak Nuclear reactions during BBN?
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Graduate How is the duration of BBN calculated?
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High School The observed spatial distribution of matter
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High School Before Big Bang: What Surrounds the Singularity?
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Sir Roger Penrose: Challenging Modern Physics Theories
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Undergrad CMB-S4 Science Book: First Edition | The Universe's Secrets
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High School Gravity: Is it Spacetime or Mater-Dependent?
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High School What percentage of the universe do we know
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Graduate How do quantum fluctuations become gravity wells?
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High School Entropy change during the formation and death of stars
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Undergrad Would Heat Death overcome Strong Nuclear Force?
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High School Combine a horizon line with expansion
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Undergrad Is something pulling our universe?
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High School Shapes and gravitational radiation
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High School Coordinated galactic bangs instead of big bang
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Undergrad How would dark matter aggregate?
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Graduate How do we explain universal complexities?
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Undergrad Average size of the biggest G-bound structures in the Universe
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Undergrad What would a universe look like if it had 2 time dimensions?
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High School What do you think of the "Now Hypothesis"?
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Graduate Did the LUX Dark Matter Experiment Fail to Detect Dark Matter?
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High School Graph of rotation curve of a cluster (not a galaxy)
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Graduate Motivation behind the theory of cosmological perturbations
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Graduate Quantum fluctuations in early universe
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High School What is the initial temperature of the Big Bang?
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Insights A Poor Man's CMB Primer. Part 4: Cosmic Acoustics - Comments
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Undergrad Does LQC Resolve the Information Paradox Without Complementarity?
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High School What came first, matter or energy?
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Graduate Can Time Scale Change Analogously to Spatial Expansion?
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Undergrad Scale invariance in the power spectrum
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Graduate Newtonian theory of cosmological perturbations
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Graduate Cosmological perturbations in homogeneous and isotropic spac
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High School Regression of Universe: Is Time Repeatable?
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Undergrad How does the expansion of space affect the age of the universe?
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Undergrad Intergalactic Space: Time, Radiation & Distance
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High School What is the significance of the spooky alignment among quasars?
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Graduate Gravitational Lensing: Einstein's Blue Run Mystery
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High School Are There Really Hundreds of Black Holes in NGC 6101?
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High School Why Quantum loop or string theory
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Undergrad Difference between omega 0 and omega k
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Undergrad Early opaque universe - why little proton-photon scattering?
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High School What is the next step in cosmology
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What Lies Between the CMB and the First Stars?
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Graduate Shape of the Universe: Is it Infinite or Finite?
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Undergrad Constants of nature in the early universe
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Graduate Exact solutions of quintessence models of dark energy
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High School Can the space (or else measurable) be actually infinite?
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High School What cancel the quantum contributions in Cosmological Const?
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High School What is beyond the edge of the universe?
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High School The universe is shrunk a little bit more than we thought
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Undergrad View of a Void: Intergalactic Space & Dark Energy
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Undergrad Flatness Problem: Critical and Actual Density
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Undergrad Gravitational field inside a void
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Undergrad Default 'now' when discussing astronomical things
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High School Question pertaining to dark energy
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Undergrad Where galaxies are now or is there a universal 'now'?
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Undergrad Some questions regarding the initial singularity
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High School Could Dark Matter Be the Fifth Fundamental Force of Nature?
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Undergrad Inflationary Energy: Origins & Conversion
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Graduate Do cosmologists take spontaneous symmetry breaking seriously?
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High School Does LIGO detect back ground noise
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Undergrad Perhaps an unknown property of gravity....
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High School Before the big bang video series
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High School How Did Light Originate After the Quark Epoch?
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Undergrad What Triggered the Big Bang Singularity's Expansion?
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Undergrad Hubble parameter in terms of the scale factor
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High School Could a New Field Explain Dark Matter's Role in the Universe?
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High School Some more basic questions on Dark Energy
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Undergrad How is motion in space different than motion in spacetime?
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High School How does the Universe's expansion relate to Newton's 1st law
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High School Explanation of the asymmetry of the Universe
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Undergrad What Does Absolute Magnitude in the B Filter of a Distant Galaxy Refer To?
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Undergrad Why is the density infinite at the singularity?
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High School What caused the uneven distribution of mass/energy?
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Undergrad Is Superdeterminism the Key to Understanding Our Universe?
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Can Dark Energy be eventually infinite?
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Undergrad How do I convert the number of efolds to conformal time during inflation?
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Undergrad How can the integral be rewritten using a change of variables?
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High School Hubble flow and velocity addition
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Graduate Whats the genesis of quantum foam,planck constant, & string
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Undergrad Difference between hubble sphere,particle horizon and event
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Undergrad What is the significance of the cosmological jerk in the expanding universe?
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Undergrad Is Infinity Inevitable in Our Understanding of the Universe's Beginning?
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Undergrad Where do high energy background photons go?
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Undergrad Can Unification of Forces Coexist with an Eternally Inflating Universe?
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High School Is the Speed of Light Dependent on the Size of the Universe?
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Undergrad Relations resolves singularity -- new paper on arxiv
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Undergrad How Similar Are the Images from BOSS and CMB Planck Spacecraft?
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Undergrad Is Dark Energy an Established Force in the Universe?
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High School Is the Universe Finite or Infinite?
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Undergrad Gravitational waves affected by gravity?
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Undergrad Night skies in a contracting universe, would they look blue?
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High School The big bang singularity and black hole singularity
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High School Is the Galileon theory an alternative to GR
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Undergrad Are Quantum Fluctuations Valid Causes for Universe Creation?
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Undergrad Center of the Universe: What Again
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High School Are universe and big bang considered to be the same thing?
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Undergrad Redshifts of galaxies and the expansion of the universe
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