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 Is Galaxy Expansion Truly Driven by Space Itself or Just Doppler Shifts?
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Stargazing My Telescope Adventure: Meade LXD75 SN10
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Stargazing How big of a difference have you noticed with cooling your telescope mirror?
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High School Is There a Center of the Universe?
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Graduate What happens to dark matter in galactic collisions?
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High School Light Speed and Voyager Space Probes: A Reflection
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High School Why Did Ancient Astronomers Believe the Earth Was Round?
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Graduate Quick question on big bang as expansion of space itself.
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Graduate Playing with Coordinate Systems (Spherical Geometry)
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High School Do stars actually exist beyond our solar system?
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Graduate Need help understanding Collapsed Configurations of stellar Mass
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Graduate Accretion Disk Density & Fusion: What You Need to Know
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Graduate Not Parallel Universes, Nested Universes
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Graduate Can an Artificial Satellite Move Opposite in a Geostationary Orbit?
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Graduate What if the universe is not a bubble, but a sponge?
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Graduate I still don't understand why there isn't a center of the universe?
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Graduate Planetary Positions according to JPL Data
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Graduate Redshift, Distance & Expansion rate question
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Graduate Seeing the milky way in it's past
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Undergrad If energy can't be created or destroyed, then where did energy come from?
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Graduate How is information conserved in a black hole?
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Graduate CMB Power Spectrum and Angular Power Spectrum Plot from WMAP
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Graduate Is the observable universe is spatially flat?
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Graduate Can Wormholes Exist in a Flat Universe?
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So I was just watching a naked science episode on discovery about
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Graduate Calculating universe age vs. size of universe
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Could a Subsurface Launched Water Vehicle Create a Tidal Wave?
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Undergrad Angular Momentum & Artificial Gravity in a Spinning Space Station
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Graduate What exactly are Baryon acoustic oscillations?
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Graduate Precession of the Sun's rotation axis
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Graduate Planet Formation: Unsolved Questions in Solar System Origin
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Undergrad Determining the radius of a star
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Undergrad Rotating planets and magnetic fields
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Graduate Age of Universe: 13.4 Billion Years Explained
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Graduate Expanding universe and energy question
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Why do domains expand in a way that makes each point equivalent?
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Undergrad Big bang, schmig bang: everything's just shrinking
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Graduate Dyonic Black Holes: Meaning and Examples Explained
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Graduate Create Matter: A Puzzling Mystery
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Undergrad Send Radio Signals to Other Stars: Accounting for Arrival
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Undergrad Why is our galaxy a disc and not a sphere?
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Graduate What shape would the Univers be if we could see all of it
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Undergrad What are the forces on an object in near-Earth orbit?
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Graduate Speed of light in intergalactic space
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High School Would a human be able to see a nebula if they were close enough?
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Undergrad Could we realistically see ancient images of the earth from reflected light?
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Graduate Tracking Unstable Elliptical Orbits for College-Educated Scientists
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Graduate Given LQC would a massive black hole undergo inflation?
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Undergrad Is universe expanding or contracting?
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Scientists find most massive star ever discovered
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Graduate Doubt about the polar equation of a Kepler orbit
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Undergrad The Mystery: The Causes of Gravity Explained
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Best month for observing (North East USA)
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Graduate Is there a Path for Galaxies Moving Away?
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Undergrad Pressurization in an enclosed space
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Graduate Relative Stargazing: Adjusting Time Distortion for True Representation
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Undergrad Why was the big bang not an explosion?
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Graduate Could the Universe Repeat Itself Over Infinite Time?
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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 Where Does Gravitational Potential Energy Originate?
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Graduate New Barrow paper - A New Solution of The Cosmological Constant Problems
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Graduate Black Hole Plus Charge: Unsolved Mystery
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Graduate Is an Expanding Universe Hidden Beyond Black Holes?
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High School Is the Galactic Alignment Real or a Myth?
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Undergrad Where can I find the actual velocity and position of earth at a specific time?
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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 How Do You Describe the Motion of Two Bodies Relative to Their Center of Mass?
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Graduate The Gravitational Effects of Electromagnetic Waves
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Undergrad Dwarf Stars: Detecting Low-Mass Stars in the Universe
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Graduate Why We Have Heavy Elements on Earth
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High School Why Do Planets Maintain Distance Despite Gravitational Attraction?
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Graduate Why is the universe shaped like a pebble?
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Graduate Is it possible to use a black hole as a mirror to the past ?
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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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High School Unraveling the Mystery of Light From Stars
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Graduate My black hole white whole dark matter/energy reversed time theory.
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Graduate How much dark matter is in the Sun, and does it have any
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Graduate Standard Candle Dimming Due to Extra Expansion
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Graduate Can We Model Universes with Different Physical Constants?
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High School Why Can't Objects Exceed the Speed of Light in Space?
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Undergrad A simple algorithm, with no use of the mass, to reproduce the 3 laws of Kepler
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Undergrad Exploring Orbital Velocity: Significance and Applications
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Graduate Accelerated expansion and lightcurves
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Graduate What is the Origin of the Repelling Force Between Dark Energy and Matter?
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Graduate Does the uncertainty principle mean that black hole has to become a big bang?
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Graduate Black Hole Annihilation & Photon Interaction
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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 Euler rotations in galactic plane to change to equatorial
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Graduate Core Drop: A Simulation for Sealing Oil/Gas Conduits and Beyond
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High School Stars from outside the atmosphere
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High School Solar Flare Danger: Worst Damages & Preparing for X Class
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Graduate What Happens When a Black Hole Swallows Another Black Hole?
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Astronomy Software - Professional Recommendations
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Graduate Can Sustained Nuclear Chain Reactions Achieve Constant Acceleration in Space?
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Undergrad Can Black Holes Break the Rules of Time?
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