Astronomy, Astrophysics, Cosmology Forum

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Join in expert discussion on the topics of Astronomy, astrophysics and cosmology. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
Graduate Time & Black Holes: Creative Perspective on Creation
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Graduate Vacuum Energy - Pair Production Confusion
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Graduate Is Gamma Ray Emission from a Black Hole Really Possible?
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Undergrad Redshift: Is the Universe Slowing or Accelerating?
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Collisional model of asteroids and their debris
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Undergrad Why don't stars in a cluster clump?
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Graduate Help with Bohm's Criterion: Pre-Sheath Explained
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Graduate Where can I get C14 data for cellulosic material?
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High School Beginner's Guide to Stargazing: Tips for Observing Space from Mumbai, India
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Graduate Why Do Graphs of the Cosmic Microwave Background Show a Peak at 2mm, Not 1mm?
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High School Are there any equations I can solve on a 10-hour road trip?
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Graduate What is frequency of a gamma ray emitted from a supernova
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Graduate Assumption of spherical nature of the universe
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Graduate The Edge of the Physical Universe
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High School Earth transits the Sun as viewed from Mars in 2005?
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High School Getting to Mars: Is 4 Days Possible?
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Undergrad How Can We Understand the Concept of Universe's Temperature?
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Graduate If space is expanding (moving) then does relativity change?
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High School Are there any stars that do not have a planetary system?
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High School Can Staring at Stars Really Make You Deaf?
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Undergrad Nature of Universe: Latest Thinking Explored
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Undergrad Counting Stars in Universe: How Big Bang Began
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Graduate How to Extract Effective Mass from a Logarithmic Galactic Potential?
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Undergrad Mercury's Tidal Lock & Eccentric Orbit Explained
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Undergrad Universe Acceleration: When Did it Begin?
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High School Difference between Astronomy and Cosmology is?
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High School What Causes the Green Tint in Some Meteors?
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High School What movies the particles of light?
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Graduate What Are the Implications of the New Riess Hubble Rate?
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Graduate Can mathematical beauty lead to a better understanding of physical laws?
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Graduate Reliability of physics as an exact description of the universe
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Undergrad Can Gravity Really Slow Down the Expansion of the Universe?
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Graduate Can Randomly Generated Brains Hold the Secrets of the Universe?
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Graduate Can Softening Length Affect Dark Matter Halo Stability in N-Body Simulations?
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Undergrad Can We Build a Shaw-Fujikawa Translight Engine for Space Travel?
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Graduate Value of Hubble Parameter in Decelerating Universe
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High School What is the other focus in an elliptical orbit?
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Graduate Real 3-Body Systems Initial Value Problem Data
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Undergrad Hypernova release two huge jets of gamma rays
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Graduate Cosmic Microwave Background - why do we see photons from 13 billion years ago?
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Undergrad Black Holes vs Wormholes: What's the Difference?
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Graduate Small Flat Universe? How is it Possible?
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Graduate Extra Dimensions: What Caused Compactification?
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Graduate How does the curvature of the universe evolve in cyclic models?
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Galaxy Count: How Many in the Visible Universe?
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Graduate What is the Relationship Between Track Growth and Universe Expansion?
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Graduate What exactly is cosmological inflation?
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Undergrad Is a black hole considred a black body?
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Undergrad Convert km/s to kpc/Gyr: 0.964275 Factor?
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Graduate Does Graviton Scatter Affect the Moons and Rings of Gas Giants?
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Undergrad Yahoo: Earth-Venus smash-up possible in 3.5 billion years: study
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Undergrad Why Universe Expansion Doesn't Affect Solar System
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Graduate Is the Universe's Electromagnetic Radiation Noise Uniformly Distributed?
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Graduate Could the Universe Have Been Swimable During Inflation?
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Undergrad Heart shaped observable universe?
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Undergrad Black holes - a few questions from a newb
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Graduate Particle physics when light wave expands infinitely
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Graduate How did Jonathan Swift predict mars moon speeds?
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Is Haumea the Jinx Football-shaped Planet in the Kuiper Belt?
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Undergrad Help sought - data on intergalactic distances
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Graduate How is density calcuated from WMAP data
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High School Gravitational Force: Why Don't Planets Collide?”
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Graduate Is the rate at which the universe expanding increasing?
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Undergrad Universe expanding +c. +c impossible?
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High School Why Doesn't Earth Fall into the Sun Due to Gravity?
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Undergrad From Big Bang to Iron: A Timeline of Creation
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Graduate Uncovering the Mystery of Dark Matter: Theory and Evidence Explained
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Graduate Could Extra Dimensions in String Theory Be Larger Than Our Own?
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Graduate How is Dipole Anisotropy Expansion Derived in Weinberg's Cosmology?
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Graduate Is this interpretation on Hubble's Law/Constant right ?
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Undergrad Harnessing Energy from Outer Space - Solar, Nuclear & More
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High School Is the ground moving or are we moving?
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Graduate Potential energy of a particle within a dark matter halo
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Where does word universe originate from?
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Graduate What Happens to Gravity and Temperature at the Center of a Black Hole?
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Undergrad So how fast are we actually moving?
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Graduate No need for dark energy , gravity will suffice.
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Graduate How seriously do you take the FLRW model?
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Graduate Wanted to find out some things about the universe
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High School Why does the sun travel faster about its equator?
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Undergrad Why does the sun have non uniform distribution of magnetic fields?
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Graduate Can Black Holes Create Interdimensional Bridges to Other Universes?
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Undergrad Determining the individual magnitudes of two stars
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Graduate Thor's Helmet: Pre-Supernova with Emissions Nebula?”
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Graduate Chaotic Inflation Models & Equations
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Graduate 2 Q's - hawking radiation and inflationary universe
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Graduate Effective Destructive Range of Supernovae?
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High School Can I (amateur astronomer) detect extrasolar planets?
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How Can I Make the Moon Look Bigger Using Mirrors?
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Graduate When Did Gravity Separate from Other Forces After the Big Bang?
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Graduate Black Hole Collision: What Would Happen?
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Graduate What causes the research interest in cosmology?
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High School Is There a Preferred Plane for Satellite Orbits?
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Undergrad Universe Energy: Where Does It Come From?
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Graduate Mean Intensity Magnitude of Variable Star
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How, in GOD'S NAME, does one pronounce Wolf-Rayet
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Graduate Finite universe and inflation theory
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Graduate What is the initial force of universe expansion?
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Graduate Universe expanding faster than light
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Graduate Quasars & Antimatter: Evidence of Abundance?
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