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 Understanding the Early Chronology of the Universe
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Undergrad Equilibrium chaotic environment
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Graduate Help With Constraining Parameters in Massive Gravity Action
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Graduate Fisher Forecasting For EUCLID Survey Help
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Undergrad New possible explanation for Hubble redshift
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Undergrad Radial BAO size method and Hubble parameter
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Undergrad Don Page - cosmological doomsday argument
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High School ? about oscillating models of the Universe and Entropy
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Undergrad Information for black hole region in surface surrounding it
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Undergrad Black hole - between horizon and singularity
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Undergrad Black hole - event horizon and Hawking radiation
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Undergrad What is the Cosmic Microwave Background and how can we observe it today?
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Undergrad Question on the particles that formed the Earth.
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Undergrad Infinite Regress: Cosmologists' Answer to the Dilemma
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High School Measurements on the entire universe
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High School Is Inertia Tied to the Stars According to Mach's Principle?
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Undergrad Why Does Physical Space Have 3 Dimensions?
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Undergrad What is the significance of systematic redshift and Mg II in astrophysics?
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High School Is the concept of a multiverse just science fiction or a scientific possibility?
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Undergrad Time Scale -- Does Time have uniform Scale?
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Insights What Is the Cosmic Background Radiation?
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High School Nothing, something and the Universe
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Undergrad Problem interpreting a Distance-Redshift Plot
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Undergrad Neutrino flavour eigenstates and expansion of the universe
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Undergrad Comoving distance and redshift relationship derivation
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Undergrad Experimental bound on the scalar spectral index
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High School Could Our Location in a Supervoid Alter the Hubble and Acceleration Parameters?
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Undergrad Why Aren't Galaxies Formed After the Big Bang Referred to as Being Further Away?
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High School Why is the low entropic state of the early universe a puzzle
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High School Did we just discover the Milky Way is in middle of nowhere?
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Undergrad Possible retrocausal events and time paradoxes
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High School Hubble's constant and Minkowski spacetime
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Undergrad Red shift and the maths for gravity
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Graduate How To Do Fisher Forecasting For Constraining Parameters
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High School Relationship Between Density and the Hubble parameter
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High School Our solar system and its fellows
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High School Understanding Re-entry Perturbations After Inflation
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High School What Drives the Accelerating Expansion of Space?
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High School Singularities forming universes?
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Undergrad Why does physical space have to be three-dimensional?
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Undergrad Does the Planck length expand in a FRW universe?
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Undergrad What are the alternative theories for the end of the expanding universe?
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High School Where Did the Energy Go in Light Waves When the Universe Expanded?
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Undergrad Life permitting ranges for fine tuning constants
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High School Can Primordial Black Holes explain Galaxy formations
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Graduate What Is a 'Black Hole' & What Does It Mean for Particles?
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Undergrad What is the lower bound constraint for G in terms of anthropic principles?
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Undergrad What happens to the information entering a Black hole?
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High School Does the expansion of space influence the passage of time across the universe?
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Graduate Calculating the power spectra of scalar perturbation
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High School Does the geometry of space really change with gravity?
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Undergrad Interesting controversy about inflation models of the universe
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Undergrad Centre of mass of the observable universe
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Undergrad Comoving mass density leads to linear cosmology?
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Graduate Variation of Hubble constant in cosmological time
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High School Definition of unshifted spectral lines?
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Undergrad Is the Force on a Particle in a Homogeneous Static Universe Always Zero?
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Undergrad Alexander Vilenkin spontaneous creation
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High School Evidence for interacting dark energy from BOSS
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Undergrad How Does the Hubble Parameter Relate to Galaxy Movement?
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Graduate Hubble scale and energy density during inflation
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Undergrad Entropy and Expansion in a Simple Universe
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Undergrad What is the purpose of cosmological simulations in understanding dark matter?
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Undergrad How Can Data Constrain the Number of e-Folds During Inflation?
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Undergrad Does a black hole cut the fabric of spacetime as it changes
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High School Why Can't We Find the Centre of the Expanding Universe?
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High School Is Dark Matter physics low or high energy physics?
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High School Is Space an Object Capable of Bending?
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Undergrad How will the universe empty out?
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Undergrad Entropy Change in Time of Universe
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High School What is the origin of the Gibbons-Hawking temperature?
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Graduate Is Dark Energy an Illusion? A Closer Look at Concordance Cosmology
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Undergrad Does the number of causal patches increase bc of expansion
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Undergrad Consequence of curvature of spacetime
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Undergrad Do particles create space over time? Is that expansion?
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Undergrad Argument that a maximum density Universe expands linearly
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High School What is meant by the size of the early observable universe?
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Undergrad Where Would Ancient Intelligent Life Have Seen Cosmic Background Radiation?
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High School Lawrence Krauss and shortening the lifespan of the universe
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High School Could Boltzmann Brains Become a Reality in the Far Future?
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High School How Does Space Expand? Understanding Universe Expansion
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Undergrad Plateau models of inflation after Planck
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Undergrad Oldest galaxy to date: UDFy-38135539
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Undergrad Will the Universe one day become smaller?
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Graduate A cosmological expansion problem too difficult for me
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High School Is the Expansion of the Universe Uniform?
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Undergrad CERN n_TOF experiment: 'Age of the Universe'
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Undergrad Observing Naked Singularities: Implications for Quantum Gravity
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High School Do we still live in a Big Bang Singularity?
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Undergrad Is it possible to travel between the multiverses?
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Undergrad Using big data to identify astronomocal data bias
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High School Why doesn't dark matter reside in gas clouds?
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Undergrad Why Can We Still Observe the Cosmic Microwave Background?
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Undergrad Curvature and the size of the Universe
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Undergrad Is there a relationship between dark matter and anti-matter?
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Undergrad Math doesn't add up: stars + planets < particles in universe?
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Graduate Understanding Expansion of Space
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High School Will eLISA have the potential to detect early universe GWs?
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Undergrad Energy-momentum tensor and Friedmann Equations
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High School Naive Calculation of the Age of the Universe
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