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.
B Are the stars of the constellations stationary?
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I Understanding diagrams of the late stages of stellar evolution
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B Question regarding supermassive black holes in the early Universe
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B Lost Companions: Investigating the Existence of the Nemesis Star
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I Should I study astronomy first or cosmology first?
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I What is the difference between collisionless and self-interacting dark matter?
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B Is Your Rock a Real Meteorite or a Common Meteorwrong?
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I What is the probability of life on exopanet LHS475b?
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A Has the merger of a neutron star and an anti-neutron star been modeled?
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Does Ceres ever transit Jupiter?
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I Lunar Slingshot Maglev: NASA's Energy Savings for Mars & Beyond
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I Comet Sublimation: Why Does Halley's Comet Still Exist?
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I Can Electromagnets Propel Starship Orion Using Nuclear Explosions?
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B Data needed - Related bodies and their stats
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B Projected linear separation between companion stars
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I 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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I How much better is HabEx going to be relative to Webb?
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I Measuring the rotation curve of galaxies
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I How far away are stars in a typical star cluster from each other?
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A Presentation: Venus hot break hypothesis
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B Is there a theoretical size limit for a planet?
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I What is the luminosity of Earendel?
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A Expression of Shot noise when expanding ##a_{\ell m}## coefficients
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B Could Dark Matter/Energy be the byproduct of annihilation?
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B Do Satellites and the ISS Use Power to Maintain Attitude Control?
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I Jupiter appearing flashy - red on top, blue bottom
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B Could Nuclear Powered Bulldozers Create a Habitable Cavity for a Mars Colony?
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A Temperature of HII Gas: Intuitive Explanation
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Stargazing Is the DWARF II a Viable Astroscope?
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B How did Earth get so far away from other galaxies?
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I Why are Saturn's moons so bright?
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B Where Are the To-Scale Diagrams of Alpha Centauri's Orbits?
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B 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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B Neptune: Beauty Beyond Our Standard Eyes
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A How Did Scientists Calculate the Orbital Radius of Jupiter's Moons?
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A Understanding 3D Doppler Shift with Satellites
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B Highschool Student Struggling to Understand Doppler Effect Paper
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I Have you seen the JWST Observing Schedule?
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I Why does the core collapse happen so fast in a supernova?
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I Can a Satellite Maintain its Angular Velocity with Continuous Low Thrust?
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Diffraction Effects and Artifacts in Telescopes like the JWST
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I JWST Image Reveals Processes Ejecting Material in Star Formation
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I Tides on a nearly tidally locked planet
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I How to interpret this new Keck spectrum picture of Jupiter?
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B Hydrostatic pressure in a bottle of water on ISS
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B Communication Options With Future Deep Space Probes?
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B Would the Giant Arc be visible from a hypothetical exoplanet?
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B Ivuna meteorite from edge of solar system to Tanzania?
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B Would light travel in a circle at the edge of the observable Universe?
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B How hot is the Sun in space? (James Webb related)
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B Could there be macro objects out there that convert energy to mass?
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B Possible to see the moons of Jupiter/Saturn with decent set of binoculars?
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I 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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I Database of binary star data info within 10 PC of Earth
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I Can I Find Alternative Eyepieces for My Quantum 5 Binocular?
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B Where is General Relativity Applied and When Does the Oblate Earth Matter?
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I Why Do Galaxies Spin and What Drives Their Motion?
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Stargazing Why does the asteroid Dimorphos leave a trail after impact?
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I What are the possible states of cold iron balls?
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I Orbital Velocities and Mass Distribution in Galaxies
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A Interactive Galactic Dynamics Textbook -- Bovy 2022
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A What is the cause of lunar nodal and apsidal precession?
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B Can gravitational force have influence on objects at infinitely long distances?
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I Would it be possible for a black hole to have a "solar system"?
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B Elbert Another Forgotten Woman who helped advance Science
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B Distance of Stars / Size of the Universe calculation
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I Could Passing Asteroids Alter Milanković Cycles and Trigger Climate Change?
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I Do All Galaxies with Dark Matter Halos Have Flat Rotation Curves?
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B What Could Explain the Mysterious Beam of Plasma Seen in the Sky in 2017?
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B Why does the moon appear tilted?
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How's it possible that 70% of Earth receives sunlight simultaneously
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B Degeneracy Pressure: Pauli Principle & Neutron Stars
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B Hexagonal Craters: Airless Worlds & Moons Explored
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B How Has the Calculation of Solar System Body SGPs Evolved Over Time?
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B Why are impact craters predominantly circular?
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I Identification of matter and dark matter proportions
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B Time Dimensions: Astronomy & Beyond
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B So what's your go-to method to locate M31 (Andromeda Galaxy)?
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B Nodal Precession: Satellites Orbiting Earth Explained
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Stargazing Fixing declination runaway on a Meade LX200 telescope
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B Spatial Expansion -- Coincidence?
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B What would the planets look like in real life?
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I How accurate is the distance to M4 and its stars according to different sources?
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B Amazing Rings: Intersecting Stars Create Spectacular Gas Rings
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B The value of the standard acceleration due to Earth's gravity
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I What is the temperature dependence of the NIRCam sensor's responsivity?
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A A pair of interesting papers: have counterarguments been published?
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B Could a black hole just be a planet?
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I Upper limit of relativistic spin?
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I Can we see light pollution from space?
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I Does all infrared get detected as heat?
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B What does relativity say about wormholes?
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I Gas Density of Lunar Crater Rims: Comet vs. Asteroid Impacts
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I Question about the William Herschel Telescope's new "Weave" device
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I Help me on the timeline of star formation in the early Universe
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Stargazing How can we see the ISS at 200 miles away with the naked eye?
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I Voyager I and Voyager II informative video
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