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.
Describe the universe in 15 words
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Graduate Beyond the Big Bang (mid-level book, 600 p, August 2008)
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Graduate Internal G=1 unit conversion/systems for simulation timestepping
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Graduate If the universe is getting colder, wouldn't this violate the 2nd Law?
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Graduate A Place Where Gravity and Dark Energy Equalize
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Graduate Big bang and small bang black holes
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Graduate An apology and thoughts on the cost of experimental cosmology
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Graduate Is There a Definable Centre of the Universe?
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Graduate Unpacking the Concept of Time: What Do We Really Mean By It?
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Graduate Do Gravity Waves Contribute to Gravitational Curvature?
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Undergrad Best way for a layman to get up to speed on cosmology outside of school
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Graduate Why do we and the entire universe exist?
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Graduate How Did Our Universe Begin: A Cycle of Creation or a New Dimension?
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Graduate Re-Poll: We are in a Schwarzschild black hole-T or F?
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Undergrad Time and Space: What Came First?
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Graduate What Can We Expect from the Very Early Universe Meeting at Cambridge?
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Graduate Dark energy and the first law of thermodynamics
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Undergrad Expanding Universe: Empty Space, Gas Mass & Galactic Expansion
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Graduate Superclusters and Voids - same curvature?
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Graduate Why does time seem to exist only in a forward direction?
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Graduate 2nd law of thermodynamics and the big bang
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Graduate How Could the Universe Be Smaller Than a Proton?
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Graduate Universal Acceleration and Boltzmann Brains
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Graduate Can BigBang Happen Without a Vacuum?
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Graduate Can Pressure Explain the Accelerating Expansion of the Universe?
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Graduate Lambda-CDM model and geometric units
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Graduate No Dark Energy: Hubble Constant & Astrophysics
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Graduate Cosmology Challenges: Dark Matter, Dark Energy, Galaxy Formation
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Undergrad How is the Inflation theory going?
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Graduate Are high-z SNe Ia data reliable for measuring the evolution of dark energy?
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Undergrad The Big Bang theory, and gravity
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Graduate How do we know the universe isn't collapsing ?
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Graduate It all began with an end - New theory on origin and future of the universe
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Graduate Is the Universe Expanding Into Nothing?
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Graduate Uploading minds into a simulated universe
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Graduate Big Bang Theory Self-Contradictory?
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Graduate Will wormholes go away (be found to be a quirk of the theory) or. ?
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Graduate The Density Parameter and R^3 Space
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Graduate Could there be an edge to the Universe?
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Undergrad Which is simpler and easier to imagine?
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Graduate The void: Imprint of another universe?
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Graduate Galaxies in filaments; a different evolution?
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Graduate What Caused the Big Bang and Where Did It All Begin?
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Graduate Has observing the universe sealed its fate?
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Graduate What Surprising Discoveries Await in the Multiverse?
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Seeing is different than believing
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Graduate Uncovering the Mystery of the First Three Seconds in the Big Bang
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Graduate What Are the Key Controversies in Understanding the Big Bang Theory?
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Graduate Are there an infinite number of copies of the solar system?
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Graduate Can We Detect or Interact with Alternate Universes with Different Physical Laws?
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Graduate Hubble parameter in early universe
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  • Poll Poll
Graduate What Evidence is Needed to Confirm Dark Energy's Existence?
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Graduate Bounce replaces bang: articles in *Nature Physics*
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High School Is the Universe Moving? Acceleration or Stationary?
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High School Understanding Orbital Period: Definition, Factors, and Calculation
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High School What keeps the atmosphere of a planet in place?
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Undergrad Is the Age of the Universe Linked to the Big Bang Event?
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Graduate God the Computer; The Universe's Code
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Undergrad Age of Universe: T=1/H, Flat Geometry?
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Graduate Understanding the Closed Universe: The Expansion and Contraction of Space
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Graduate If observing the universe affects its duration ? (recent Krauss Dent paper)
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Graduate Evidence of Deccelerating Universe Through History
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Undergrad Neutrinos in Nature: Estimating Numbers
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Undergrad Unraveling the Mystery of the Expanding Universe
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Graduate What Are the Key Insights from Friedmann Cosmology's Standard Model?
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Graduate WMAP tend to coincide with radio emissions from the Milky Way
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Undergrad The MAXIMUM size of the universe
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Graduate Does Gravitational Radiation Exist?
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Graduate Critique of Mainstream Cosmology
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Graduate The Big Bang and the Mysteries of the Expanding Universe
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  • Poll Poll
Graduate Is there an unambiguous 'Dark Energy' signal in the relevant astronomical data?
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Graduate What Lies Beyond the Edge of the Universe?
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High School Please recommend books for layperson?
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Graduate Is the Evidence for Dark Energy Secure?
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Graduate G from cosmological measurements
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Graduate What is the elusive origin of gravity?
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Graduate What Is the Universe's Topology According to Recent Research?
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High School Which Books Are Best for Beginners in Cosmology?
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Graduate Singularity/Expanding Universe questions
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Undergrad Starting in Cosmology: Understanding the Role of Physics and GR
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Undergrad Fusion in the Sun: Neutrons or Neutrinos – What is Produced?
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Graduate Discussing Arp's Cosmology: Issues & Evidence
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Graduate Solving the Dispute: Criticism of Hartle-Hawking Model Explained
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The Mystery of the Origin of the Universe: Perspectives and Theories Explored
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Graduate Upper limit on the rest mass of neutrinos if. .
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Undergrad Questioning the big bang theory.
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Graduate Is the Universe Actually a Cosmic Computer?
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Graduate Photon Energy vs. Red Shift, Inflation Theory, Acceleration
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Graduate Meaning of cosmological constant ?
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Graduate Does the Big Bang Theory Break Down at the Planck Time?
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Graduate Hubble's Redshift: Conclusions and Vacuum Solutions
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Graduate How Can We See the Universe's Past if We Are Made from It?
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Graduate Does the Confusing Supernova Challenge the Big Bang Theory?
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Graduate Is the Big Bang Theory a Foolhardy Extrapolation?
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Graduate Big Bang and the Second Law of Thermodynamics
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Graduate Can Future Civilizations Harness Entropy to Survive in an Expanding Universe?
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Graduate What is the ultimate fate of the universe?
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Graduate Friedmann Cosmology at T < 1 second
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High School What Does Expanding Universe Mean?
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Undergrad Universe expansion -> t = - inifinite
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