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 Early CMB Temperature: What Changed?
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Undergrad Is the CMB unique to our galaxy or present in all galaxies?
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Undergrad Studying Astronomy: Struggling with Cosmology Maths
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Graduate Does the Higgs field mean that space has energy?
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Graduate What does the abbreviation YP stand for?
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Graduate Dark Matter Particle: Is Axion the Answer?
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Graduate Measuring redshift from type 1a supernova
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Graduate Dark energy and type 1a supernovae?
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Graduate Is our locally measured time actually conformal time?
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Graduate A slight confusion regarding dark energy & energy conservation
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Graduate Is Chaisson's View on Cosmic Evolution and Entropy Mainstream in Physics?
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Graduate Argument for Grand Design, maybe?
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Graduate A couple of inflationary problems
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Graduate Does time expand along with space?
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Graduate Calculating the age of the universe without a model?
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Graduate Equation involving H and a re Accerlerating Universe
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Graduate Are atomic energies increasing as the Universe expands?
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Graduate Did the universe have a begining?
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Graduate How is Dark Energy Density Calculated in the Universe?
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High School Does space-time have an energy itself?
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Graduate Should the concept of Falsifiability be abandoned in science?
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Graduate Why are there stars that are "older than the universe"?
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Graduate Cosmological vs. Relativistic Doppler Shift
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Graduate When did relic neutrinos cease being relativistic?
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Graduate Explanation for similar structures at different scales
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Undergrad Understanding Big R(t) in Astronomy: A Physical Perspective
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Graduate Is Dark Energy a Misinterpreted Phenomenon?
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Undergrad What's the nothingness that our universe is expanding into?
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Graduate Gravitational entropy in the early universe
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Graduate Calculating Surface Density of the Universe Using the Shell Model
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Undergrad Friedmann's Assumption: Understanding the Universe's Uniformity
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Graduate Size of observable vs UN-observable Universe, etc
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Graduate What can you learn about cosmology from Google calculator?
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Graduate Role of quantum mechanics in cosmology
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Graduate Latest News from the Universe: CDM vs WDM and the Future of Dark Matter Models
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Graduate Boltzmann equation Kinetic equilibrium (Dodelson)
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Graduate Analogy for recession of galaxies > the speed of light
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Graduate Our universe as an expanding sponge that is constantly falling.
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Graduate Do M or string theory imply a lower limit to size?
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Graduate Redshift of supernova light curve
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Graduate Feedback and equilibrium between black holes and galaxies
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Graduate How can you show the CMB shift parameter?
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Graduate Covariance betw scalar amplitude & spectral index in Planck?
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Graduate Cosmological Constant and Vacuum Energy
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Graduate What does a temporally infinite universe imply?
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Graduate What supported the singularity during the Big Bang?
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Graduate Supernova Explosion near a black hole
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Graduate Static universe, spacetime and the stress-energy tensor
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Undergrad Please explain the statement "the big bang happened everywhere at once"
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Graduate How do scientists estimate the total energy of the universe?
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Graduate What are Branes? Explained Simply
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Graduate Dark energy and the Cosmological Constant
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Undergrad Why are the more distant galaxies/stars moving faster away?
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High School Can someone explain what it is meant by a 'Flat Universe'?
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Graduate How do we know Inflation begin in 10^-35 second?
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Graduate Could the Universe be Shrinking Instead of Expanding?
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Graduate The First Three Minutes - Steven Weinberg
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Undergrad What is the evidence for an accelerated expanding universe
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Graduate The Holographic Principle: Separating Fact from Fiction
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Graduate Dark Energy Evolution: Is $\Lambda$CDM Model the Best?
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Graduate Has There Been Further Progress in Shape Dynamics Theory?
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Graduate Cosmic expansion in quantum gravity
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Graduate Does the Hubble Parameter Go to Zero as the Universe Expands Forever?
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Undergrad Increase of dark energy with expansion of universe
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Graduate Could Quantum Tunneling from Nothing Equate to the Past or Future?
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Graduate What does a Cosmological Constant mean?
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Graduate Could the expansion of space tear us apart?
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Graduate Dodecahedron universe after PLanck
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Graduate Dark Matter: Could It Form Structures?
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Undergrad Is Gravity a well kept secret?
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Graduate Is MOND still a viable theory for dark matter?
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Graduate An explanation for hemispherical anisotropy in the CMB?
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Is one lifetime too little to learn all about the Universe?
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Graduate Extremely large Black Hole discovered 900M years after BB
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Graduate Thought Experiment: Where Does the Missing Energy Go?
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Graduate How does Horava Lifshitz gravity affect the speed of light in bounce solutions?
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Graduate Scale of perturbations re entropy, in quantum bounce
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Graduate Is There an Age Problem in the LCDM Cosmological Model?
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Graduate Several questions about the poincare recurrence time?
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Graduate Temperature at beginning of Electroweak Epoch?
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Undergrad Why is the universe expanding if its temperature is cooling?
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Graduate What is Nothing? Research & Explanation
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Graduate Are present and future perspectives different?
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Graduate Does the expansion of the universe affect gravitational forces?
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Graduate Loophole in theory offers insight into the 'lithium problem'
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Undergrad Is Ahmed Hulusi's Theory Supported by Science?
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Graduate Wave equation given a cosmological inflationary metric
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Graduate Scott Dodelson Modern Cosmology 4.2
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Graduate What is the smallest thing discovered in our universe?
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Graduate The shape of what we can observe?
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Graduate Missing Matter Problem and Galactic Flows
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Graduate Required backround for quantum cosmology
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Graduate Is there a subtle symmetry that may not apply in an infinite universe?
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Graduate Why must singularities create an entire universe?
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Graduate Why decaying false-vacuum necessary for inflation?
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Undergrad Astronomers Observe Supernova & Find They’re Watching Reruns
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Graduate Is Dark Matter Truly Dark or Invisible and Can it Form Crystalline Structures?
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Graduate Are all universes the same age in the Multiverse?
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Graduate Cosmological principles and their results
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Graduate Is the Universe Flat or Closed According to WMAP Data?
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