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 What Happens When You Fall Into a Black Hole According to Stephen Hawking?
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High School If the Universe keeps expanding this way, it gets torn apart
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High School Meaning of Time / Space axes swapping (for Time)
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High School Black hole movement with no time......?
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High School Is it possible to see the history of space if it expands faster than light?
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High School What Does it Mean When We Say the Universe is 'Flat'?
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High School Possibility of Another Big Bang?
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High School Why are there 4 dots in Einstein rings?
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High School Dark matter that doesn't gravitate?
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High School How Does Modern Particle Accelerator Energy Density Compare to the Big Bang?
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High School I don't understand the evidence or possibility of the Big Bang
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High School Other lines of evidence for Dark Energy? (Besides supernova data)
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High School Could Earth's Atmosphere Survive a Close Gamma Ray Burst?
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High School Why The Big Bang banged and didn’t collapsed into a black hole?
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High School Is Dark Energy a Continuous Creation Theory?
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High School Questions about the cosmic microwave background radition and its discovery
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High School The observable and non-observable parts of the Universe
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High School Is Gravity Emergent? Answers to Pre-Big Bang Questions
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High School Who is Ethan Siegel and What Insights Does He Offer About the Universe?
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High School How did the universe come into being?
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High School Infinite Universes: The Science & Limits of the Theory
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High School Universe Discovery: The Finite Theory of the Big Bang and the End of the Cosmos
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High School Is the Universe's Expansion Misinterpreted Due to Curvature?
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High School Shouldn't the time dilation in cosmic voids be immense?
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High School How Did the Early Plasma in the Universe Become Hot?
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High School Lithium problem in Big Bang nucleosynthesis?
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High School Why do we assume the big bang created matter/antimatter?
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High School How constrained are the initial conditions of the universe?
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High School Name for the distribution of matter?
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High School Universe expansion rate in m/s^2 ?
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High School We see a quasar 13 billion light years away. What does this mean?
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High School Hip Replacements and Weather Sensitivity
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High School What parameters of physics are most important to the existence of life?
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High School A question about the Planck Epoch
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High School Expanding Space in the Lab: Investigating the Possibilities
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High School What is the black that we see in the night sky?
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High School How do we resolve the Boltzmann Brain problem
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High School Questions about the Timeline of the Big Bang
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High School Can we observe anything beyond the CMB 'wall'?
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High School Early Predictions of Hot Big Bang CMB: Gamov & Alpher
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High School Does gravity become repulsive in a shrinking universe?
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High School Which rate of Universe expansion are we currently using?
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High School Looking for opinions on YouTube Fermilab videos
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High School Distance traveled by light accounting for expansion
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High School Universe rate of expansion: speeding up or slowing down?
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High School Rate of the expansion of the Universe and the Big Bang
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High School Is the Gamma Ray Burst Diameter Wide Enough to Engulf Our Solar System?
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High School Our universe was connected to another universe?
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High School Questions about cosmic background radiation
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High School What is the size of the observable Universe?
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High School Age of the Universe at the recombination?
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High School Age of the Universe vs Age of the Stars
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High School Questions regarding expansion, the vacuum in space, and black holes
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High School When could life theoretically exist in any star system after the Big Bang?
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High School Can Hypothetical FTL Technologies Enable Travel to Other Bubble Universes?
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High School What is the important scale of things in the Universe?
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High School Dark Matter & BAO: How Does it Suppress Baryonic Oscillations?
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High School Examples of theoretical proofs overturned by evidence?
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High School Particle Deceleration in Relativistic Jets?
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High School How do we know that the Universe is expanding?
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High School What is our understanding of dark matter?
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High School Can someone please explain this paragraph from A Brief History Of Time
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High School Expansion or contraction -- how do we know which?
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High School What is the probability that the Universe is absolutely flat?
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High School Is Dark Energy Born at the Big Bang or Continually Created?
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High School Is Dark Matter a Misunderstood Global Effect?
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High School Age of Universe: 13.8 Billion Years
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High School Could Matter/Anti-Matter Annihilation Explain Dark Energy and Dark Matter?
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High School Is the Hawking-Hartle Euclidean approach confirmed by CMBR data?
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High School Is 3D reality merely an illusion?
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High School Is the "Information Paradox" close to getting resolved?
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High School What Size Would the Universe Be if Compressed to Neutron Star Density?
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High School The singularities of gravitational collapse and cosmology
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High School If the universe were played in reverse, how would it differ?
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High School What A White Hole Will Look Like?
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High School What does 4 D spacetime look like?
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High School [Curiosity] Are there any central databases of Red Shift?
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High School Could accelerating expansion be caused by a "spinning" universe?
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High School 83 quasars right up against the Event Horizon
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High School How to explain "the right hand rule" to an alien universe
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High School What is the most common/likely process of the Universe?
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High School What is the 'proof' of the no-hair theorem of black holes?
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High School CMBR: Is It Constant or Changing Over Time?
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High School Which Hawking paper? (no singularity at the beginning of the universe)
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High School Help with when expansion acceleration began
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High School Can a single photon make up a universe?
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High School What Happens at the Event Horizon of a Black Hole?
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High School Andromeda Collision VS Expansion
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High School How exactly inflation solves the Horizon Problem
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High School Naked Singularity, Black hole mass limit
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High School Active galaxies point to new physics of cosmic expansion
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High School Algebraic Topology in the tv show The Big Bang Theory
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High School Comoving distance in cosmology
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High School Do Black holes reach a critical mass?
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High School Missing Dark Matter of NGC1052-DF2
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High School Ratio between the sizes of the Observed and the Entire Universe
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High School The k term in the Friedmann equation
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High School Galaxy Collisions & Expansion: What's Going On?
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High School The Impact of Expansion on the Observable Universe
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High School Why are ds and dω taken as zero in calculating proper distance in cosmology?
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