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.
High School How does 400 sigma compare with 5 sigma?
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High School Big Slurp: What Is It and How Does It Work?
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High School Help with understanding a Friedmann flat universe
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Undergrad Curve fitting the luminosity distance and redshift data
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High School Could Gravitational Waves Allow for Time Travel?
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High School Does Negative Mass Impact Expansion in Vacuum Space?
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Undergrad Why was the early universe's entropy low?
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Undergrad Does the Uncertainty Principle imply a linear cosmology?
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High School Doesn't there have to be more than one observable universe?
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Undergrad Big Bang Singularity: Was It As "Infinitely Dense" As We Think?
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Undergrad Does red shift approach infinite near time zero?
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Undergrad Where Did the Universe's Antimatter Go?
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Undergrad Galaxy with no dark matter? (NGC1052-DF2)
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High School Threshold of gravitational pull over dark energy
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High School Bubble universes and infinite in extent
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Undergrad Have we measured the change in the red shift over time?
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High School The Future of the Universe: When Will It End?
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Undergrad Conservation of Energy on the Cosmological Scale
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High School Photon mean free path (regarding CMB black body assumption)
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Undergrad Cosmological Redshift and Heisenberg Uncertainty Principle
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High School How Did the Big Bang Happen If the Speed of Light Is a Limit?
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Undergrad SU(2) invariance implies isotropy?
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Graduate Multiverse reduction in the new Hawking/Hertog model?
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Undergrad Question about accelerating expansion
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Graduate Dark energy = cosmological constant, any problems with that?
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Undergrad Simulated Reality: Proving Our Universe Is Real?
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Undergrad Vertical axis of the CMB power spectrum
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High School Did the Big Bang create space and time?
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Undergrad What will happen to the Hubble value if dark energy is dynamic and decreasing?
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Undergrad "Centaurus A Contradicts Dark Matter Models"
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High School Mutually orbiting bodies in an isolated universe
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High School No Imbalance between Matter/AntiMatter
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Undergrad Why is a statistical explanation for Baryon Asymmetry wrong?
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High School The Universe without Cosmic Inflation?
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High School Lack of time dilation in type 1a supernova
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High School Are the 3 space dimensions "equal"?
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Undergrad Does dark matter contribute to my body mass?
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Undergrad Getting the wrong multipole for 1st acoustic peak
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Undergrad Shape of the universe, and a few other questions....
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Undergrad 10,000 black holes near Sagittarius A ?
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High School Are heliocentrism and geocentrism both correct?
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Undergrad How does one actually compute a correlation function?
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Undergrad Observational evidence against expanding universe in MNRAS
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High School How dense was the first starfield we might have seen?
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Undergrad The deviation of Universe expansion from general relativity
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High School What fraction of the matter in the universe is in black holes?
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High School Does Hubble's Law imply that galaxies are accelerating away
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Graduate Comoving distance, causality volume and entropy
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Undergrad Where are the Constants of Nature stored in Multiverse?
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Undergrad Quantum foam ruled out by distant quasars
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Undergrad Are there any local effects of Einstein-de Sitter expansion?
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Undergrad Calculating recession vs attraction
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Undergrad Inter-Bubble Connections in Inflationary Multiverse Models?
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Undergrad Has cosmic background radiation been measured underground?
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High School Documentary about Hawkings contributions to science
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High School Speed of Light Puzzle: Is c a Localized Value?
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Undergrad Is a galaxy's halo displaced dark matter?
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High School Gravity of Universe A Million Years Ago: Affect Us?
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High School How can particles escape from a black hole?
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Undergrad Why are non-relativistic particles not redshifted?
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Undergrad Observational Evidence for Metric Expansion of Space?
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High School Is there a specific unit used to measure redshift?
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Undergrad Why is the inflationary potential self-interacting?
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High School Curvature at the center of a spherical universe
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High School How do we know that the rate of expansion of the Universe was slowing down
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Undergrad VSl as an alternative to cosmic inflation
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Undergrad What Triggers the Universe's Most Powerful Collisions?
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High School Does the Big Bang model rule out an eternal universe?
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High School Is the Big Bounce Theory Plausible?
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Undergrad How long will the CMB be detectable?
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Undergrad Inflation & Ω: Dark Matter & Energy Impact
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High School Does the rapid inflation of the early universe violate the speed of light?
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Undergrad Discrepancy in the Hubble Paramater
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Undergrad Is dark energy the inflow of a universal black hole?
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High School Shape of Universe | Is It Same from Every Point?
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Undergrad If Dark Matter and Dark Energy exist, what produces them?
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Undergrad Can dark matter explain dark energy?
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High School Are the Universe and Observable Universe Identical?
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Undergrad How is the universe expanding if the speed of light is finite?
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High School Who Was the Great Man We Lost on Pi Day and Albert Einstein's Birthday?
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High School Gravity Emergent: Matter or Big Bang?
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Undergrad Does space have its own density?
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High School What do people mean when they say the Universe is Computable
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High School Confusion about closed timelike curves
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Undergrad Are Friedman Equations Valid at the Moment of the Big Bang?
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Undergrad Do dark matter and dark energy have an effect on the red shift?
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High School How can the Universe be infinite and yet have a finite age?
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High School Is Space Expanding in a Relativistic Way?
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Undergrad Universe's First Stars Interaction with Dark Matter
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Undergrad Heat death of the universe and the 3rd law of thermodynamics
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High School Black holes and universe expansion
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Is the Universe a Mathematical Simulation?
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High School Dark energy causing universe expansion?
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Undergrad Help me understand these cosmological horizons and graphics
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High School Current values for Friedman's scalar and its derivative?
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High School Accelerated expansion of the universe
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High School Black hole gravitational pull questions
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High School Black Holes Must Have Singularities Says Einstein Relativity
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Graduate Planck 2015 CMB temperature individual pixel variance
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High School Anything from Nothing: Uncovering the Possibilities
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