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.
Graduate Why did dark matter surprise us?
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Graduate What Gave Mass to Particles After the Big Bang?
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Graduate Susskind's story doesn't match Krauss'?
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Graduate How Can We See Light from the Early Universe?
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Graduate What is the total energy of the universe?
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Graduate Exponential expansion and Hubble constant
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Graduate Confused about implications of flat universe
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Graduate Can we ever truly understand the concept of infinite speed?
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Undergrad Megasuns containing helium and hydrogen that were huge
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Graduate Sibling Universes: Math Rules in Twin & Non-Twin Worlds?
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Graduate Proportion of dark energy and dark matter
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Undergrad COBE satelite strongest evidence of the big bang ?
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Graduate Expansion redshift VS gravitational redshift?
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The Known Universe Scientifically Rendered For All to See (by AMNH)
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Graduate Confused about cmb decoupling/recombination
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Graduate Is the Expansion of the Universe Making Galaxies Harder to See?
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Undergrad Is Earth's Distance from the Sun the Key to Life on Our Planet?
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Graduate Debunking the Expanding Universe Theory: Examining Observations and Redshifts
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Graduate Yes, that is correct. Thank you for pointing that out.
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Graduate The nature of the universe as interpreted quantum information
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Graduate Does Universe Pulse? Theory or Naive Guess?
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Graduate The speed of sound of the inflaton field
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What Happens if Gamma Ray Bursts Hit Earth's Ozone?
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High School Is mathematics the same in other universes?
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Graduate Matter density in closed/open universe
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Graduate How Do We Know the Cosmic Microwave Background Radiation Isn't Local?
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Graduate Does the Big Bang Model Support Instantaneous Inflation in an Infinite Universe?
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Graduate Orbital period decay and gravitational waves
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Graduate What is the relationship between information and consciousness in the universe?
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Graduate Revisiting the Big Bang: Galaxy HUDF-JD2
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Graduate Hartle-Hawking Model (How the Universe Can Appear From Nothing)
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High School One question [size of the universe]
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Graduate Does the Universe's Expansion Affect Time Travel?
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Graduate Hubble Ultra Deep Field baby galaxy examination
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Graduate Why is the dark matter: baryonic matter ratio about 5:1?
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Graduate Orbital period decay and gravitational waves
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Graduate Understanding the Limits of the Universe
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High School Is the Universe Expanding Without Boundaries?
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Graduate Current CMB photon number density?
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Graduate Effects of Magnetic fiedon the Dark Energy and Cosmic String
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High School If the universe is infinite, does it mean that everything exists?
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Graduate Are Hubble's Sphere and the Universe's Age Coincidentally Similar?
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Undergrad Inflation - can someone please explain it?
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High School Paper on the physics of big bang: what should be included
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Graduate A giganitc wavefuntion of the universe = determinism?
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Graduate What Are the Biggest Mysteries of the Universe and How Can We Understand Them?
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Graduate Is a flat universe better imagined as an expanding sphere or a cube?
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Graduate What Is the Physics Behind the Expansion of Space?
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What Are the Different Theories on the Creation of Our Universe?
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Graduate Distinguishing between flatness
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Graduate De Sitter universe, is it compatible with darkenergy?
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Graduate If Hubbles constant is decreasing?
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Graduate Does any model predict the mass (or total energy) of the observable Universe?
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Graduate Variation of Density Parameters with Redshift
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Graduate Accelerating Expansion: Is there a Positive Feedback Loop?
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Graduate Universe expanding or time speeding up?
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Graduate Thermodynamics in Friedman World Models
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Graduate Expansion of space and looking back in time
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Graduate Could dark energy have existed before the Big Bang?
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Graduate Big Bang Expansion: White Hole Theory
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Graduate Is the Inertial Frame Defined by the Universe's Center of Mass Unique?
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Fat Guy vs Skinny Guy: Universe Size Dependent?
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Graduate The Conundrum of the Speed of Light and the Expanding Universe
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Undergrad Edge of Universe: What's Beyond the Limit?
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Graduate Evidence for pre Big Bang physical universe?
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Graduate The metric expansion of the Universe
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Graduate What is the true essence of the universe beyond human perception?
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Graduate Why is the term 'Big Bang' a misnomer?
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High School Was there more than one Big Bang?
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Graduate How Does the Integrated Sachs-Wolfe Effect Support the Concept of Dark Energy?
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Graduate What Would an Infinite Universe Look Like at the Time of the Big Bang?
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Graduate Are Black Holes Real? Investigating Gravitational Collapse
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Graduate Did the Big Bang Create Time or Reveal an Infinite Paradox?
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Graduate Pauli Exclusion Principle: Finite Creativity or Philosophy?
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Graduate Is this not mathematical evidence that the universe is an open system?
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Graduate Black holes, white holes and expansion of Universe
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Graduate The Illusion of the 3rd Dimension: A Mathematical Perspective on Space and Time
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Graduate Proximity of early galaxies to each other
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Graduate Does the expansion rate of our universe depend on its mean density?
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Graduate Horizon problem - why do we need inflation?
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Undergrad Why Is Dark Matter Essential for Understanding Gravity in the Universe?
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Graduate What is our universe expanding into?
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Graduate Can Modified Gravity Explain Cosmic Structure Without Dark Matter?
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Graduate Correcting Galaxy Luminosities for Absorption ?
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Graduate Is Modified Gravity Theory a Viable Alternative to Dark Matter?
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Graduate How do we know that spacetime is expanding
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Is the Higgs Particle Just a Myth?
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Graduate Future of the universe without proton decay.
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Graduate Can Modifications to Gravity Explain the Accelerating Expansion of the Universe?
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What Lies Beyond the Universe?
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Graduate Ted Bunn on expansion, redshifts and the dangers of 'rubber sheets'
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Graduate What is the relationship between stars, lithium, and exoplanets?
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Graduate Redshift and Particle Momentum Decay
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Graduate Is the Steinhardt-Turok Cyclic Model Gaining Support?
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Undergrad Accelerating Expansion Threshhold
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Graduate Is the universe an open or a closed system?
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Undergrad Stars born in clusters, found in single
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Undergrad Evidence of Expansion: Redshifting of EM Radiation
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Graduate Antimatter (in relation to earth)
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Graduate Supergalactic cluster waves and geological cycles
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