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.
High School Is the Earth-Moon System a Double Planet or Planet and Satellite?
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Graduate Conservation of mass - Stellar equation
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High School Why do 1A Supernovas always explode at the same exact point?
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Graduate Blackhole temeperature and bigbang
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High School Is the moon orbiting the earth at the same speed that earth spins?
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Interstellar travel is impossible, moore's law is finite, the heat dea
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Graduate Why do I never hear that the BB was caused by a collapsing black hole?
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Undergrad If the universe is finite in size, what is at the end of it?
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Graduate Hydrostatic equilibrium of a cylindrical area
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Graduate The Dark Flow & the Existence of Other Universes -New Claims of Har
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Undergrad Mars in Future: What's Ahead 1-3 Billion Years?
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Undergrad A 13.2Billion year old star just 186 Lyrs from earth
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Undergrad Brown Dwarf more massive than stars?
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Graduate Origin of Time: Theory of Big Bang Universe
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Graduate How have supernovae shaped the evolution of heavy elements in the Milky Way?
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This is how Atlantic wire scientific columnists roll
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High School Why wouldn't the Earth gravitate towards the Sun?
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Graduate Can the universe be flat, yet finite?
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Graduate State-space model of magnetically suspended ball
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Undergrad Had an, oh, that's how moment - Slingshot manuever
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Graduate Why do we need the inflaton to expland space-time?
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Graduate What is Dispersion Measure and How is it Used in Astrophysics?
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Graduate Re: artificial intelligence tied to universe construct?
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Graduate Velocities in space relative to other objects
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Graduate Cosmic Slow Down: Is Dark Energy Variable?
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Graduate Mass of the Universe: Dark Energy, Inflation & Observations
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Graduate Why isn't there Cosmic Visible Background Radiation from gamma rays?
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How can I contribute to the field of cosmology?
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Graduate Unification of Forces: Heating Up Spacetime & 4 Forces
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Graduate Is the Big Bang Still Happening and Could It Lead to a Big Crunch?
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Graduate Did Hubble opine that the universe was expanding?
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Graduate Does the Acceleration of the Universe Change?
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Undergrad How many parsecs is it when the redshift z=1
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Undergrad Naive Understanding of Dark Matter and Dark Energy
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Undergrad How deep would you have to dig into Mars to reach Earth's gravity?
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Graduate What are the unanswered questions in Cosmology?
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Graduate Is the New Lunar Mascon Model the Key to Understanding Moon's Gravity Anomalies?
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Graduate Idea for cosmo Basics (minimum to understand meaning of expansion)
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Graduate Balloon Analogy with different visualisation
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Undergrad Thinking about going to school for Cosmology/Astonomy.
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High School Floating Objects Affected by the Moon
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Graduate Is the Universe Infinite in Time as Well as Size?
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Graduate Fermi energy approximation for white dwarfs
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Graduate Does Time Expand in All Directions in the Universe?
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Graduate Astronomical Archives: Finding Distances to Stars
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Undergrad Will Light Travel Further in an Expanding Universe?
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Undergrad Rings & Tidal Locking: Formation Possibilities
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Graduate Aspiring Theoretical Physicist Seeks Grand Unified Theory Impact
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Undergrad Animating Solar System Evolution from Real Physics Data
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High School Need axial tilt info of earth daily
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Graduate The idea behind a reverse shock
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Graduate Calculating the probability of a Boltzmann Brain
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Graduate Earth-Moon Barycenter and Pro-Retrograde motions
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Graduate Will the Expansion of Space Prevent Overlapping Cosmic Horizons?
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High School Getting Started with DS9: A Beginner's Guide
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Undergrad After help understanding black drop effect
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High School At which distance can you see Saturn's ring with a naked eye?
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Graduate What can stellar kinematics tell us about the IMF?
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Graduate Universe geometry article development
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Undergrad Theory about the end and beginning of the universe.
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Graduate Why not an equal amount of matter and antimatter in the universe?
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Graduate Cosmology questions, something that is puzzling me for days
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Graduate Can Atmosphere exist in Moon Craters?
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Undergrad Why do stars appear to have different colors?
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Graduate Is It Possible to Destroy a Blackhole?
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Undergrad What to study to be an astronomer
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Graduate Could the Redshift of Light Challenge Our Understanding of the Big Bang?
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Graduate Metaphysical description of the cosmos, help with theory?
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Graduate Matter in a super condensed state?
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Undergrad Universe is speeding up? Are we traveling with it? Dark Energy.
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Graduate Could the universe be a big ripple?
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Graduate Implications of a 2-Dimensional Universe
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Graduate What gives a Black Hole its tremendous gravity?
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High School What Caused the Bright Flash on the Moon on March 17, 2013?
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Undergrad Debunking the Myth: Why Exposing to Vacuum of Space Won't Make You Explode
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High School Static Universe vs Expanding Universe
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Undergrad Will the Moon Ever Escape Tidal Locking?
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Graduate Criteria for causal independence (new paper, Planck data)
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  • Poll Poll
Would You Take a One-Way Trip to Mars?
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Graduate Stellar formation / Expansion / Education questions
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High School Facts/Figures on Stars & Galaxies for Year 7 Class
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Graduate Is it possible that nature laws constants changed over time
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Graduate GALAXIES - what was 'extra' so visible matter was presumed missing?
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Graduate How would you teach quantitative cosmology? What examples to use?
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Undergrad Is It Natural for the World to Have Zero Angular Momentum?
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Graduate Doppler shift, c, observation, recession, spacetime expansion
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Graduate Unraveling the Mystery of Dark Matter and Mass: Fact or Fiction?
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Graduate A few questions about using power laws
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Graduate Is the Universe able to evolve due to fundamental forces?
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Undergrad Why are all the orbits elliptical and not circular?
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Graduate Why aren't black holes the brightest objects in the universe?
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Graduate Initial Conditions of Astrophysical Simulations in 3D
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Graduate Cosmic Horizon and Surface of Last Scattering Question
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Earth's axial tilt and the shadow from the Sun
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Undergrad Functions for properties of stars and their planets
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Graduate Question about eddington luminosity
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High School Consequence of light pointing towards a blackhole
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Undergrad Shooting images through window pane glass
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Graduate Form of Friedman eqn with Λ curvature constant
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I've finally accept that the universe is unimaginable
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