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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 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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Graduate Some thoughts concerning backgroun radiation
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Graduate Is the CMBR Data Truly Singular?
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Graduate Blackbody Prediction for CMBR: Alpher, Herman, and Gamow's 1948 Theory
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Graduate Is the Last Scattering Surface Finite or Infinite?
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Graduate Is Free Will Possible in a Deterministic Universe?
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Graduate What are the mechanism implications of MECO?
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Graduate What Happens to Gravity in a Collapsing Universe?
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Graduate How Does Redshift Affect Photon Energy Conservation for Comoving Observers?
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Graduate Could Black Hole Matter Challenge Our Understanding of the Universe?
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Graduate Question regarding pre-bigbang detection.
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Graduate A Giant Hole in space Well, I'll be a
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Undergrad Pulsar Particle Beams: Speed & Collisions
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Undergrad What is the relationship between temperature and redshift?
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Graduate Can black holes absorb gravity waves?
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Graduate Can a Big Crunch Happen in an Open Universe?
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Graduate Finding a Natural Frame of Reference on the Cosmic Scale
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Graduate Distances contract as a result of motion?
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Undergrad Can Absolute Velocity be Measured with Cosmic Background Radiation?
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Graduate Is Dark Matter Really Just Dark Gravity?
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Graduate Is There An Age Problem In The Early LCDM Model?
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Graduate Collapsing and expanding shell theorem
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Graduate Titan - Exposed to large amounts of Oxygen
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Graduate Gravitational motion transitions into universal expansion over distance
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Graduate How Do Black Holes Influence Time and Matter in Our Universe?
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Graduate Please explain the Big Bang and universal expansion
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High School The universe is expanding. Into what ?
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Graduate Magnitude vs Redshift Supernova 1a
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Graduate Is the Conventional Wisdom About the Universe Wrong?
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Graduate Spiral and Disk Galaxies are controlled by single parameter. What and How?
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Graduate If the universe is expanding more rapidly now
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Question about black holes and white dwarf
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Graduate The Missing Baryon Problem & Baryonic Tuller-Fisher
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Graduate Infinity and unique don’t mix. Theory
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Graduate Could a Variable G Explain Dark Energy and Matter in Our Universe?
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Are There Images of Phobos or Deimos Taken from Mars' Surface?
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Graduate Cosmological redshift and doppler redshift
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Undergrad Books on Cosmology of Stellar Objects
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Undergrad How much did the universe grow during inflation?
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Undergrad Composition of matter in the universe
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Graduate What are the best resources for studying Quantum Cosmology?
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High School Comparing Gravity and Big Bang Theory
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Graduate Understanding the accelerating expansion of the universe based on redshift
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Graduate Can We Detect Extraterrestrial Radio Signals Amid Solar Interference?
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Graduate Harnessing Dark Energy: Can We Make It Happen?
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Graduate The first CMB peak - Flat Universe
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Undergrad 13bn+ lightyears in all directions?
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Graduate Is the Universe Flat or Curved According to Planck Probe Data?
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How Will the Universe End According to New Theories?
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Graduate Can We See Distant Galaxies at Multiple Points in Time?
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Graduate What's the probability of a universe capable of life?
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Graduate How Does the Universe Expand According to Physics?
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Undergrad Flat Universe? Astronomer's Lecture on Why We Aren't Special
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Graduate Matter/antimatter, mass questions
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Graduate Can Dark Energy be a Fifth Force?
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Undergrad Cosmic Background Radiation - why is it still here?
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Undergrad What Happens After the Big Crunch?
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Graduate Doubt about our spacetime manifold
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Graduate Understanding Gamma Ray Bursts: Can We Predict & Model?
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Graduate What is meant by a particle should not overclose the univese? what is overclose?
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Undergrad How is the 3-d space an approximation of Euclidean Geometry?
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Undergrad What Are the Chances of Life on Jupiter's Moons and Other Saturnian Moons?
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Graduate Is the Cosmological Principle a Product of Our Perceptions or a Universal Truth?
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Graduate What Is Beyond the Infinite Universe and Its Expansion?
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Graduate Can the End of the Universe Be Measured with a Bouncing Wave? Great Video
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Graduate Radius of Universe 6 Gyrs Ago: What Was It?
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Graduate Question about observable universe.
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Graduate Are Supermassive Black Holes Roaming Galaxy Centers After Merger Events?
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Graduate What caused the tiny variations in the Cosmic Microwave Background?
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What is the probability of life in Universe?
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Graduate Why do cosmologists consider the cosmos infinite?
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Graduate How uniform is the expansion of the universe?
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So what to do with knowledge of how the universe works?
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Graduate Expansion and conservation of energy
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Undergrad Cause of Big Bang: What Started the Expansion?
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Graduate Black holes and redshift (2 questions)
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Graduate Calculating Critical Density Using FRW and Its Implications
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High School What is the Max Wavelength of CMB Radiation?
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Graduate How Does a Black Hole's Gravity Vary Despite Its Infinite Density?
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Graduate How did the Hydrogen Atoms formed from Energy ?
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Undergrad Anthropic Principle Interpretations
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Graduate Status of Dark Flow Phenomenon: Kashlinsky's Claim
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Undergrad Universe 93 billion light years?
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Graduate Hawking On The Edge Of The Universe
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Graduate Could this be an explanation why there is more matter than antimatter?
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Undergrad If Mass can be turned into energy, can enegry be turned to Mass?
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