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 Expansion and raisin bread
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High School Questions about the structure of dark matter
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544
High School Estimates — True Size of the Universe?
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High School A Mind-Boggling Number Comparison
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High School Red shifted tired light doubts
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High School If the Universe has a cause, what caused that cause?
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High School Looking to get a better understanding of bubble universe formation
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High School Is space stretching or is new space being created?
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High School Rutgers finds a transparent Einstein Cross - apparently a dark matter "halo"
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High School Can big bang be a part of a loop?
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543
High School What happens to information inside a blackhole
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High School Matter density right after the decoupling
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High School Inflation after Atacama Cosmology Telescope Results
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High School Realism about singularity
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High School What is conformal time?
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High School Cosmic Microwave Background Stage 4 Cancelled for now
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High School Flatlander analogy of spherical surface as observable universe
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High School Conflict between the conservation of matter and the rapid expansion of our universe
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High School Big Bang and Infinite Universe
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High School Can You Ace Harvard's Galactic Quiz?
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High School Could Black Hole Collisions Trigger a Cyclical Big Bang and Universe Rebirth?
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High School Thought experiment to compare the present with the future flow of time
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High School Proper time of the observer resting in CMB reference frame
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High School What Would You See at the Edge of the Expanding Universe?
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High School Does an infinite universe contradict a Big Bang origin?
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High School Dark Matter Theory Endorsed By NASA
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High School An old spin to our Universe
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High School Could you build a container to isolate cosmic radiation?
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High School How do we know if a distant galaxy is matter or anti-matter?
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High School Questions about the Eddington Limit and Super - Eddington black holes
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High School Evolution of the Universe in reverse
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High School Cosmological Redshift in Simulated Universe
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High School Redshifts of nearby galaxies
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High School Galactic Sheets and Voids
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High School How can an infinite universe expand?
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High School Do Fictional Worlds Exist in the Multiverse?
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High School Questions about a paper on reconciling JWST and HST data
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High School Matter/Anti-Matter in a Vacuum
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High School Big Bang as the Collapse of a Wave Function
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High School Expected Earth-relative velocity of interstellar particles
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High School Approximately how long does it take for a galaxy to form?
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High School Discussion on the source or cause of Dark Energy Dark Matter et al
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High School Question About Dark Energy
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High School Percentage of known energy in the Universe
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High School Pressure on creation of the Universe
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High School Can the "creation" of space in the Universe affect the speed of light?
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High School History of CMB, prediction of 1 in 100,000?
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High School Expansion of the Universe
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High School Big Crunch in an infinite, symmetrical, Newtonian universe?
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High School Matter-antimatter asymmetry - a simple explanation?
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High School Dark energy might not be constant after all
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High School Can the force of gravity overcome the Planck force?
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High School Do we 100% know what the geometry of the Universe is?
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High School Could Dark Energy be an (unknown) dark force acting at great distances?
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High School Question about Hawking Radiation and Iron Stars
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High School Where does the original singularity get its energy from?
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High School Cosmic Graviton Background and Primordial Gravitational Waves
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High School Observable universe and overlapping spheres
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High School Dark matter and extreme gravitational regimes
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High School Is perpetual motion a forbidden topic in the scientific community?
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High School Comoving distance constant with increasing redshift?
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High School What is the Borde-Guth-Vilenkin theorem?
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High School Why Is Universal Attraction Used If Galaxies Accelerate Apart?
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High School What value of z (redshift) equals apparent superluminal recession?
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High School Roger Penrose model of the rebirthing universe
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High School How did expansion take 380,000 years to let light travel freely?
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High School The distance to the nearest identical Hubble volume in light years?
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High School Why is spacetime shown on a 2 dimensional plane?
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High School What does it mean to say the Universe is the same everywhere?
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High School How can a single Big Bang be true?
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High School History of Cosmology: 1915-1929 | Einstein, Hubble & GR
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High School Age of Universe: Big Bang, Braneworlds & Perspective
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High School Cosmological time dilation of high-redshift quasars
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High School Expanding Universe -- What is it expanding into?
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High School Is the Universe's age 13.7B years in a particular frame?
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High School How does gravity's warping of spacetime appear first among the forces?
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High School Celestial objects in the very far future
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High School Images with CMB used to Illuminate Dark Matter
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High School Which statement is more accurate? (Hubble's redshift vs. Hubble's law)
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High School Subatomic particles and dark matter
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High School B-Modes in CMB Polarization - any change since BICEP2 in 2015?
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High School Where did the first universe come from?
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High School Did Georges Lemaître Think the Universe Began from a Point?
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High School Expansion of space affecting photon's energy
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High School Mass of Space (B but approaching I)
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High School Is There a Standard Definition for One Light Year Distance?
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High School Long String Theory: Unveiling the Universe's Secrets
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High School Does Roger Penrose's Big Bang cyclic-universe thing make sense?
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High School Is there any kind of anti-matter "problem"?
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High School Why so many want, or are not disturbed by, a "deterministic" universe?
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High School Is the Universe really infinite?
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High School How did the universe start and evolve into what it is today?
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High School Why the expansion after the "Big Bang" is showed in cylindrical form?
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High School Size of universe - rewinding big bang versus "flat" universe
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High School Dark Energy, Dark Matter and the Speed of Light
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High School Does a contracting universe destroy its black holes?
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High School Clarification on how old the Universe is
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High School Light element abundances for He3/H?
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High School Can physical constants be different in other galaxies?
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High School Gravitomagnetic explanation of Dark Matter
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