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 A steady-state solution for the flow in the Boussineq approximation in a star
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Stargazing Telescope recommendations for watching a galaxy?
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Undergrad A question about a popular example of expansion
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High School Expanding Universe - Could It Be Rotating?
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Stargazing Comet 46P/Wirtanen Visible to Naked Eye Dec 16
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High School Dark matter is "normal" matter in black holes?
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Undergrad Rotation profile for radiative zone of Sun - convection
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Undergrad Is the increment of the expanding universe part of cosmology
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Undergrad What happens to a star's heat when it gets torn apart by a black hole?
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High School Does everything in space have or inherit inertia?
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High School Can Black Holes Be Annihilated?
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Graduate Model of the Universe/Multiverse
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High School Discuss Dark Matter & Light: Photons Affecting Space-Time?
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Undergrad Definition of 'dynamical equilibrium'?
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Undergrad Solar spectral intensity per wavelength - frequency
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Undergrad What was there before everything came to existence?
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Undergrad How many galaxies do we have red shift data for?
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Undergrad Interpreting the Behavior of Galaxies in an Expanding Universe
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Stargazing What is the likelihood of another solar grand minimum occurring soon?
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High School When light arrives at the end of space, what happens?
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Undergrad Does Planet Mass Affect Orbital Period?
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High School HSC dark matter survey...where is it?
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High School Is the energy of empty space concentrated differently in curved spacetime?
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High School What is the Correct Formula for Calculating the Velocity of Saturn's Rings?
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High School Does the Path of an Interstellar Object Curve Due to Solar System Movements?
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High School The Red Light Shift and Space Debris
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Undergrad What is the acceleration of the universe?
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High School How Does Time Dilation Vary Across the Galaxy?
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High School Expansion or Attraction: What's Driving Our Universe?
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Undergrad How do we know age of the universe?
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High School Ratio of Earth-Sized exoplanets to other sizes of exoplanet?
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Graduate How are parameters in inflation models tuned to align with CMB constraints?
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Graduate How much does peculiar velocity affect distance measurement?
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Undergrad Measuring the Effects of Dark Energy on Bound Objects: An Experimental Study
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Undergrad Were Population III stars powered entirely by p-p fusion?
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High School What is the reasoning behind MOND's modification of gravity?
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Undergrad Solid diprotium saturated vapour density
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Stargazing Possibility of small bodies of liquid etc
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Graduate Is Dark Matter a Dead End in Physics?
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Undergrad How do we calculate galactic gravitation?
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High School No low-frequency emission from Fast Radio Bursts
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Undergrad Liouville Theorem and the Expanding Universe
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High School Does dark matter interact with Baryons?
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Undergrad A little doubt regarding specific angular momentum
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Undergrad Force as a function of time/space
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Undergrad Would complexity re-emerge if cosmic expansion reversed?
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Graduate Do vacuum Ironing boards cause negative pressure in my Space
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High School IB Extended Essay in Astrophysics
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High School Barnard's Star, 6 Light-Years Away, May Have Cold SuperEarth
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Graduate Artistic sense-ualisation of elementary origins of the Universe
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Stargazing Southern hemisphere flickering orange/green star
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High School Parallel Spacetimes: Matter & Antimatter Separated?
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High School Is Dark Energy Causing the Universe's Expansion?
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Undergrad Hypatia, Elliptic orbits, conic sections
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Undergrad Positive energy density of the universe
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Undergrad List of modified gravity theories
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Graduate How to calculate Saturn's mass from Kepler's third law?
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Undergrad How much does the Universe accelerate?
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High School Magnetospheric eternally collapsing objects
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Undergrad Merging Neutron Stars: What We Know So Far
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Undergrad Calculating the Sun's core temperature?
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High School Was the universe is infinitely large at the big bang?
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Undergrad What would happen if dark energy density decreased?
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Graduate Accretion rate onto a WD over time (relation)
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Undergrad Gaia parallaxes might reduce tension for Hubble constant
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Graduate Numerical solution of the Mukhanov-Sasaki equation
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Undergrad Why Is Jupiter's Surface Gravity Not as High as Expected?
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Undergrad Why limited discussion of only looking at history
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High School Why Doesn't Earth's Strong Gravity Crush Everything on Its Surface?
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High School When a star exhausted it's nuclear fuel
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Undergrad Gravity and how it starts and stops
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Undergrad Ratio of Normal to Dark Matter: Unchanged Since Beginning?
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High School What does it mean to say that "space" has a temperature?
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Undergrad Core collapse of a supernova: the "void" left by the collapsed core?
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Undergrad What areas of nano/optical research applies to astrophysics?
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High School Why Does Cosmic Growth End and Why Is Our Era Unique?
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High School Is the cosmic expansion uniform everywhere?
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Undergrad Understanding Gunn-Peterson through the Reionization epoch
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Undergrad Move the Earth Away from the Sun
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Undergrad What formulas would apply during a Big Crunch
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Undergrad Redshift of Star Light: Proportionality to Distance & Other Theories
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Undergrad What is the Drift Rate of Jupiter's Great Red Spot?
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High School What is the correct way to calculate the speed of the Great Red Spot on Jupiter?
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Undergrad Correlation between a Star's Luminosity and Distance?
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High School A Valid Position on Time Theory?
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High School Picture of the Day: Gas Swirling Around a Black Hole
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Undergrad How to differentiate Doppler shift from star emission
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High School What is containing the Universe?
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Undergrad Question on the Derivation of Temperature/Scale Factor Relation
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High School Measuring the Universe's expansion rate
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Undergrad Possibility of a quasar jet laser impacting Earth directly
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Graduate Coriolis Drift of Discrete Objects
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High School Formation of Supermassive Black Holes
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Graduate Calculation of the "lightness number" for solar sails
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High School Why the multiverse makes no sense to me
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High School New Plume on Mars - ESA Image Revealed
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High School Rough probability that aliens would visit the Earth?
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High School Calculating solar irradiance at each planet?
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Undergrad Detect exoplanets by yourself with the cheapest equipment
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High School What would the universe be like with less mass and energy?
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