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.
Undergrad How the satellite parts get damaged
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High School Lunar and Solar eclipse - same times a year?
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High School Big Bang & Infinite Universe: Evidence & Discrepancies
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Graduate Kepler's Second Law - reaching an unsolvable equation?
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High School Viscosity of Space: Theory & Evidence
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Graduate Is Galilean Creation a Viable Alternative to Inflationary Cosmology?
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Undergrad Neil deGrass Tyson "Orbital Erosion"
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High School The sun at midnight from North Pole
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Undergrad Age of the observable Universe?
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Graduate Universal Gravity: Does It Affect Us Beyond the CEH Line?
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Graduate Understanding the Effects of Black Hole Collisions
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Graduate Is the Universe's Expansion Truly Accelerating Based on Redshift Observations?
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Undergrad Help with Venus Transit AU calculations
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Graduate Understanding Coherent Large Scale Modes in Power Spectra
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Graduate Will the Universe Collapse Soon?
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Graduate Closed Universe: Can Universe Be Considered a System?
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Graduate Quantum tunnel into becoming solid iron
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Undergrad Peanut-shaped near-Earth asteroid imaged by radar
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Graduate Why is there more matter than antimatter at this point?
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Graduate How can the observable universe be 46 billion lyrs in size?
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How is the ISS Captured Using a Telephoto Lens?
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Graduate The End of the Universe: Heat Death and the Fate of Matter
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Undergrad New rocky exoplanet discovered is the closest to Earth
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Graduate Inflation and Monopoles: Exploring the Mysteries of Cosmic Expansion
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Undergrad How did planets get their Orbits?
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Graduate Can LQC be distinguished from normal inflation through observational windows?
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Graduate Predicted Heat Death of the Universe
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Graduate Phase Space & SM: Universe Defined?
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Undergrad Black Holes: Gravity & Formation Explained
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High School What is the center of the universe?
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Graduate What Are the Implications of Unfalsifiable Theories Beyond the Big Bang?
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Graduate Infrared Yoga: Is It Possible for Aliens to Learn?
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Graduate Did Time Exist Before the Big Bang?
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Undergrad Astrophysics uses wave optics or geometrical optics?
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Graduate Dark matter particle search at CERN vs cosmology simulations
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Graduate Is Terraforming Uranus And Neptune Possible?
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Graduate Newtonian Friedmann Equation, Referance frame, Homogeneity
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Graduate Why Photons Can't Explain Dark Matter
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Undergrad How do we know the universe is infinite?
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Graduate What actually happens when the black hole takes the photons
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Graduate Which dimension does the black hole belongs?
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High School How Fast Is the Moon Moving Away from Earth?
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Insights LCDM Cosmological Model in Simplified Math (Part 3) - Comments
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Graduate Can Black Holes Truly Absorb All Matter and Energy?
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Insights Approximate LCDM Expansion in Simplified Math (Part 2) - Comments
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Graduate Earth's Orbit & Fleming's Left Hand Rule
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Undergrad Term for space in front of the expanding universe.
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Graduate Expansion is a compounded error based on a wrong assumption?
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Graduate Measuring the entropy of the universe?
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Graduate Variable Speed Of Light In General Relativity
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Graduate New Theory: Dark Matter Acts Like Pion - Evidence Found
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Undergrad How do they know distance of the original standard candle?
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Undergrad Earth-Like Planet orbits Sun-Like Star
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Graduate Critical density: question correction
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Graduate From Aeon to Zeon to Zeit, simplifying the standard cosmic model
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High School Does theory of expansion effect gravity?
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Graduate Is there a theoretical min. size/mass limit to a black hole?
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Undergrad Is the Fermi Gamma Ray Detector Capable of Detecting Individual Photons?
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Graduate Utility of observational Hubble parameter data on DE
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Undergrad Guidelines for including "atmosphere" in a body's "diameter"
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Graduate Cumulative number counts of galaxy clusters
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Graduate Why do we believe dark matter exists?
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Graduate What does it mean to have a Black Hole Spike?
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Graduate Are Saturn's Rings Caused by Fractal Structures?
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Graduate Photons and Space-Time Expansion
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Undergrad Intersecting Orbits of Binary Stars: A Visual Guide
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High School Is it possible to keep a rip in space open? All info welcome
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Undergrad Do quasars and blazars exist today?
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Graduate What's the Dark Matter Density in Universe?
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Graduate Does space expansion affect the rate of time?
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Graduate Non-Flat ΛCDM Model: Consistency with BOSS Result on Universe Curvature
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Insights Approximate LCDM Expansion in Simplified Math - Comments
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Undergrad Function driven solar system model.
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Graduate Witness the Majesty of the Ring Nebula: 100% Crop & (Nearly) Full Frame
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Undergrad How can we see galaxies behind other galaxies?
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Undergrad What Causes Gravity in the Cosmos?
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High School Newbie question.... The Big Bang & The Observable Universe (and time)
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Undergrad Calculating mass of Milky way Galaxy
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Graduate Similarities and differences Black Holes and Big Bang
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Graduate Is Dark matter homogeneous in Universe?
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High School How far can transmissions go in space?
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Graduate Does gravity get destroyed in a black hole ?
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High School Is Pluto Really Bigger Than Eris? New Horizons Settles the Debate.
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Stargazing Is there a proper way to clean a telescope mirror?
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Graduate Has the Cosmological Constant Mystery Been Solved?
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Undergrad Big Bang Expansion Creates Planets?
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Graduate Proportions and other Stuff about Expansion
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Graduate So my question would be: Is Dark Matter a superfluid?
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So is this scary? (Black Hole in binary system)
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Graduate Why isnt the universe full of quark stars?
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Graduate Planetoid formation, spherical or not.
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Undergrad How Do We Determine the Original Color of Light from Distant Galaxies?
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High School Does the Sun Spin? Answers Explained
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Graduate FRW metric, convention misunderstanding?
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Graduate Why do we believe gravity to be a weak force....?
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Graduate The LCDM Cosmological Model in Simplified Math
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Are Helios Quantum 5 binoculars worth the investment?
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Graduate Question about speed of light and information
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Graduate Can the mathematical equations in cosmology truly describe the real world?
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Graduate A layman's guide to the accelerating expansion of space
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