Astronomy and Astrophysics Forum

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Join in expert discussion on the topics of Astronomy and astrophysics. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
Stargazing Is Plutonium Found in Space Naturally?
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Undergrad Angle of Sun by date and zip code?
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Undergrad Oort Cloud and Kuiper Belt: differences
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Undergrad Oort Cloud Dynamics: Interaction, Composition, Hazards
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Undergrad How Long Does Water Ice Take to Sublimate in Space?
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Graduate N-Body Simulations of Chaos in the Orbits of Trappist System Planets
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High School Map of M87 Galaxy & Universe: Find & Explore Here!
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High School 'Universe Breaking' results from JWST -- What does this mean?
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High School Deriving the Approach Velocity of Meteorites
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Undergrad Research paper and sources investigating Earth's moons
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Undergrad Do Emission and Absorption Spectra Match? A Non-Physics Minded Tourist's Guide
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High School Forming Stars/ Brown Dwarfs by photo-erosion
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Graduate Stephen Hawking's doctoral thesis is available online
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Undergrad Estimating Mass of Central Object Using S2's Orbit Motion and Kepler's 3rd Law
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Undergrad What Milky Way stars could go supernova to < +3 at any time?
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High School Why is this JWST paper a cause for 'Panic'?
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High School Can a T-tauri star degenerate into a Brown dwarf?
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High School Formation of Brown Dwarfs in filaments?
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Undergrad Is there a difference between an ultracool dwarf and a brown dwarf？
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NASA confirms half-ton meteor crashed in South Texas
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High School Who was the first person to recognize the stars as very distant suns?
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Graduate Does the invariable plane of the Solar system have axial precession?
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Undergrad Could Dark Matter Be Stray Exoplanets or Collapsed Stars?
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High School What is the best source for this star data? (M44 Beehive Cluster)
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High School Hot white dwarfs and pre-white dwarfs discovered with SALT, MNRAS
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High School What is the “Unknown physics” of the new Kilonovae explosion?
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Undergrad Some reasoning about Alfvén’s frozen-in flux theorem
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High School How Can Planetary Movements Affect Time and Illumination on an Inhabited Planet?
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Stargazing The Happy Fall Day for Meteorites
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Undergrad What is the basic definition and application of the virial theorem?
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Undergrad Cosmic Microwave Background Surveys
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High School Planetary Orbits - Elliptical or Wavelike?
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Undergrad Electron-Positron Pair Instability Supernova
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Graduate Black holes: merged remnants have similar spin - why?
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High School The green comet is just a weak smudge now
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High School How Do Gamma Ray Bursts Compare to Man-Made Plasma Emissions?
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Undergrad What Causes the High Tide on the Antipodal Side of the Earth?
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High School Are the stars of the constellations stationary?
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Undergrad Understanding diagrams of the late stages of stellar evolution
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High School Question regarding supermassive black holes in the early Universe
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High School Lost Companions: Investigating the Existence of the Nemesis Star
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Undergrad Should I study astronomy first or cosmology first?
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Undergrad What is the difference between collisionless and self-interacting dark matter?
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High School Is Your Rock a Real Meteorite or a Common Meteorwrong?
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Undergrad What is the probability of life on exopanet LHS475b?
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Graduate Has the merger of a neutron star and an anti-neutron star been modeled?
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Graduate Does the gravitational rate of acceleration increase within a planet?
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High School Does Ceres ever transit Jupiter?
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Undergrad Lunar Slingshot Maglev: NASA's Energy Savings for Mars & Beyond
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Undergrad Comet Sublimation: Why Does Halley's Comet Still Exist?
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Undergrad Can Electromagnets Propel Starship Orion Using Nuclear Explosions?
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High School Data needed - Related bodies and their stats
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High School Projected linear separation between companion stars
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Undergrad Is it possible to unbind a neutron star?
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Stargazing Can Stars Be Spaghettified in a Matter of Days by Black Holes?
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Undergrad How much better is HabEx going to be relative to Webb?
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Undergrad Measuring the rotation curve of galaxies
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Undergrad How far away are stars in a typical star cluster from each other?
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Graduate Presentation: Venus hot break hypothesis
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High School Is there a theoretical size limit for a planet?
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Undergrad What is the luminosity of Earendel?
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Graduate Expression of Shot noise when expanding ##a_{\ell m}## coefficients
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High School Could Dark Matter/Energy be the byproduct of annihilation?
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High School Do Satellites and the ISS Use Power to Maintain Attitude Control?
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Undergrad Jupiter appearing flashy - red on top, blue bottom
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High School Could Nuclear Powered Bulldozers Create a Habitable Cavity for a Mars Colony?
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Graduate Temperature of HII Gas: Intuitive Explanation
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Stargazing Is the DWARF II a Viable Astroscope?
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High School How did Earth get so far away from other galaxies?
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Undergrad Why are Saturn's moons so bright?
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High School Where Are the To-Scale Diagrams of Alpha Centauri's Orbits?
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High School Meteor detection/prediction: One over Toronto, ON, Canada
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Stargazing Join the occult (Dec. 7th/8th, Moon will occult Mars.)
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High School Neptune: Beauty Beyond Our Standard Eyes
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Graduate How Did Scientists Calculate the Orbital Radius of Jupiter's Moons?
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Graduate Understanding 3D Doppler Shift with Satellites
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High School Highschool Student Struggling to Understand Doppler Effect Paper
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Undergrad Have you seen the JWST Observing Schedule?
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Undergrad Why does the core collapse happen so fast in a supernova?
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Undergrad Gravitational binding energy of the sun?
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Undergrad Can a Satellite Maintain its Angular Velocity with Continuous Low Thrust?
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Graduate Diffraction Effects and Artifacts in Telescopes like the JWST
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Undergrad JWST Image Reveals Processes Ejecting Material in Star Formation
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Undergrad Tides on a nearly tidally locked planet
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Undergrad How to interpret this new Keck spectrum picture of Jupiter?
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High School Hydrostatic pressure in a bottle of water on ISS
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High School Communication Options With Future Deep Space Probes?
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High School Would the Giant Arc be visible from a hypothetical exoplanet?
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High School Ivuna meteorite from edge of solar system to Tanzania?
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High School Would light travel in a circle at the edge of the observable Universe?
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High School How hot is the Sun in space? (James Webb related)
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High School Could there be macro objects out there that convert energy to mass?
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High School Possible to see the moons of Jupiter/Saturn with decent set of binoculars?
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Undergrad Jansky: When Physics Majors Should Expect It
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Stargazing ATLAS observations of the DART spacecraft impact at Didymos
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Undergrad Database of binary star data info within 10 PC of Earth
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Undergrad Can I Find Alternative Eyepieces for My Quantum 5 Binocular?
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Undergrad Kepler orbits for planets of similar masses
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High School Where is General Relativity Applied and When Does the Oblate Earth Matter?
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Undergrad Why Do Galaxies Spin and What Drives Their Motion?
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