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 Doppler Effect Proven by Red Light from Distant Galaxies
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Graduate What if the universe is shrinking instead of expanding?
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Graduate Time as the force carrier of mass
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Graduate Does Mass Have Latency? Investigating Colliding Galaxies
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Graduate Cosmological Constant and Conservation of Energy
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Undergrad What Does Flat Universe Mean?
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Graduate Question about accelerated expanding universe theory.
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Graduate How can the Universe be flat and isotropic?
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Graduate Why does the Universe have a net charge of zero?
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Graduate Chalnoth case against Loop Quantum Cosmology
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Undergrad What if the gravitational force is
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Graduate Fine Structure Constant Varies With Direction in Space
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Graduate Could Time Symmetry Explain the Arrow of Time?
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Graduate Is Our Understanding of the Universe Shaped by Archetypal Concepts?
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Undergrad Are We in the Middle of the Universe?
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Graduate Is there preferred reference frame for motion in the universe.
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Graduate Could Anti-Matter Be Moving Backwards Through Time?
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Graduate Big Bang Cosmology: Running Hot and Cold
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Graduate Philosophical/quantum implications of Big-Bang singularity
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Graduate Pre Big Bang Cosmology: Is There a Consensus?
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Graduate Can You Survive a Jump into a Black Hole?
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Graduate Understanding Comoving Hubble Radius
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High School Distance and Time: A Big Question
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Graduate The Big Rip: Will Black Holes Be Ripped Apart Too?
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Undergrad The center of the infinite universe
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Graduate Can Supernovae Measurements Constrain the Curvature of the Universe?
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Graduate What Was the Total Mass Energy Density at Recombination?
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Graduate Parsing Time in the Very Early Universe
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Undergrad What is wrong with our understanding of the universe?
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Graduate Is the Fate of the Universe Truly Determined by Dark Energy?
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Graduate Naive Multiverse Question: What Happens When Universes Collide?
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Graduate Do black holes swallow dark matter?
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Graduate Could 'Dark Matter' be Nutrinoes?
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Graduate Is the standard model of cosmology flawed?
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Undergrad Big bang contradicts flat universe?
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Graduate What would happen if gather all universe matter into one object.
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Graduate Can Conformal Weyl Gravity be a Viable Cosmology?
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Graduate Can TV Antennas Pick Up CMB Radiation?
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Graduate HST ultra deep field and angular diameter
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Undergrad Is Our Universe Infinite or Spherical?
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High School What Direction Are Galaxies Flowing in the Expanding Universe?
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Graduate Does Cyclical Universe Theory Account for Matter Distribution Anomalies?
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Graduate Dark Matter Missing Mass Really too Much Gravity
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Graduate Are modern galaxies found in ancient galaxy clusters?
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High School Big Bang: Space & Time Explained
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Graduate Some slight confusion regarding the dimensionless Hubble parameter h.
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Graduate Has an infinitely bouncing universe really been discredited?
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Is the Japanese Miniature Universe Experiment Still Ongoing?
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Graduate Is the world of anti-matter a possibility or just a fictional concept?
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Undergrad Universe contained in another universe
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Great Graffiti Stop Motion Big Bang Big Boom
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Graduate Can we analytically continue the Standard Model?
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Graduate Conformal time analytical expression
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Graduate Inflation is very unlikely less than 10^-6.6×10^7
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Graduate Is it possible to determine if space is fixed or moving?
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Graduate Slight confusion with black holes
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Graduate Here is some weird idea: Dark matter/energy explained by negative mass matter
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Graduate Does the Opaqueness of Space Increase?
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Graduate Density of Atmospheric Gas Using Newtonian Gravity
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Graduate Is Galaxy Expansion Truly Driven by Space Itself or Just Doppler Shifts?
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High School Is There a Center of the Universe?
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Graduate What happens to dark matter in galactic collisions?
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Graduate Quick question on big bang as expansion of space itself.
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Graduate Not Parallel Universes, Nested Universes
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Graduate What if the universe is not a bubble, but a sponge?
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Graduate I still don't understand why there isn't a center of the universe?
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Graduate Redshift, Distance & Expansion rate question
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Undergrad If energy can't be created or destroyed, then where did energy come from?
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Graduate CMB Power Spectrum and Angular Power Spectrum Plot from WMAP
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Graduate Is the observable universe is spatially flat?
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Graduate Can Wormholes Exist in a Flat Universe?
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Graduate Calculating universe age vs. size of universe
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Graduate What exactly are Baryon acoustic oscillations?
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Graduate Age of Universe: 13.4 Billion Years Explained
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Graduate Expanding universe and energy question
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Graduate Dyonic Black Holes: Meaning and Examples Explained
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Graduate Create Matter: A Puzzling Mystery
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Undergrad Why is our galaxy a disc and not a sphere?
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Graduate What shape would the Univers be if we could see all of it
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Undergrad Could we realistically see ancient images of the earth from reflected light?
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Graduate Given LQC would a massive black hole undergo inflation?
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Undergrad Is universe expanding or contracting?
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Scientists find most massive star ever discovered
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Undergrad Why was the big bang not an explosion?
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Graduate Could the Universe Repeat Itself Over Infinite Time?
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High School Why is Space Black? Can it be Explained?
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Graduate Do changes of spacetime geometry affect entropy?
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Graduate Are the Various Arrows of Time Correlated?
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Graduate New Barrow paper - A New Solution of The Cosmological Constant Problems
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Graduate Galactic Magnetosphere: Size, Winds & Earth's Impact
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Undergrad Rotating Galaxies: Milky Way, Local Group & Beyond
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Graduate The Gravitational Effects of Electromagnetic Waves
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Graduate Why Does Iron Trigger a Supernova in Stars?
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Graduate Red shift, gravity, and dark energy.
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Graduate Standard Candle Dimming Due to Extra Expansion
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Graduate How Do We Discern Dark Matter from Dark Energy in the Universe?
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Graduate Cosmological Constant: QFT and Existence Explained
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Graduate Modeling Universes: Can We Predict Theoretical Universes?
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Undergrad Sedna's Long Orbit: Uncovering the Reasons Behind Its Unusual Path
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Graduate Does Gravity Wave Travel Faster Than Light Wave Near a Black Hole?
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