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.
I Which one is Antares in this photo?
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I Distinguishing between the effects of dark matter and MOND
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I Release of trapped light during supernova
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I Circular polarization and linear polarization of pulsars
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I Spectral class temperature range
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I Is anything not spinning in the Universe?
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B The fastest spinning and possibly the youngest magnetar known
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I NANOGrav results on Thursday (June 29)
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I What is theorized to be the coldest white dwarf in the Universe?
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I Solar internet problems in 2025?
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Stargazing Inquiry Regarding Hypothetical Faster-Than-Light Travel Scenario
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I Testing for dark energy using the Local Group
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I Oblate Ellipsoid: Can Earth Be Modified?
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I How to find Heliocentric latitude data for each planet?
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I Thoughts on this article: The Universe Is More in Our Hands Than Ever Before
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B Questions about Supermassive stars in the Milky Way Galaxy
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I Any evidence of white holes in the Universe?
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I How is there any pressure at all in isotropic radiation?
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B Has Earth Lost Its Status as a Planet?
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I Star with quadrupole in a binary system violates Newton's 3rd Law?
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B What is a parsec and how is it measured?
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I Measuring the Velocities of Astronomical Objects in the Milky Way
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I What keeps dark matter in galactic halos?
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B Glimpsing Orion's Setting in the Western Sky
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I Comet Bernardinelli-Bernstein enters inner solar system
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I Early Catalog of Planet-Hosting Multiple Star (≥ 3) Systems
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B Saturn's 145 Moons: The Latest Discoveries and What Sets Them Apart
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I What are the conditions under which stars can radiate coherent light?
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Stargazing Asteroid filmed over the English Channel
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B When Would Planets Go Dark if the Sun Went Out?
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B What caused the recent supernova in the Pinwheel Galaxy?
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I Discovering the Truth About Antares: From Young Red Supergiant to Blue Giant
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B How can the Universe be flat? Ridiculous
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I Where can I find publicly accessible data from observatories in Europe?
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B At what distance would a Venus-like planet have a HZ temperature?
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B Night Sky of Alpha Centauri: Sol as a Bright Star
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B How bright is the Sun compared to the sky?
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B What Would Happen to the Elements in the Human Body If Teleported to the Sun?
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B What's a good website for aurora forecasts?
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I Was Electroweak Symmetry Breaking in the Early Universe Controversial?
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I What Could Cause the Earth's Rotation to Dramatically Slow Down?
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B Ken's Constellation Query: Viewing Same Constellation in AUS & SA
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I Calculating Proportional Luminosity of Fictitious Star
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I Runaway supermassive black hole?
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Stargazing Huge daytime fireball over Israel earlier today
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B Exoplanet TOI-4603 b, ~13x Jupiter mass, ~1.04 Jupiter diameter
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Please express this theory of mine mathematically or through equations
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B Ultramassive Black Hole (UMB), 30 billion solar masses?
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B Are the stars that we see in constellations within the Milky Way galaxy?
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B Circumgalactic Black hole imaged by the Hubble Space Telescope
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B AI Enhanced image of M87 black hole
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B Discover Jupiter's Mysteries with James Webb Space Telescope
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B How many astronomers use JWST data?
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B Vulpecula, pulsars and neutron stars
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B Uracil found in carbonaceous asteroid
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A As stars contract, why does total entropy rise?
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B Why do people not notice the equinox when it happens?
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I Do supernovae generate neutrinos or antineutrinos?
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I If GRB-221009A had been in Milky Way, would we have been fried?
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I What Can We Learn About Stellar Nucleosynthesis at the NIC-XVII Symposium?
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B What is the significance of the record-breaking Gamma-Ray Burst GRB221009A?
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Stargazing U.S. Solar Eclipse of Aug. 21, 2017
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I Phase Contrast Telescope - Part II
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Stargazing Is Plutonium Found in Space Naturally?
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I Angle of Sun by date and zip code?
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I Oort Cloud and Kuiper Belt: differences
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I Oort Cloud Dynamics: Interaction, Composition, Hazards
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I How Long Does Water Ice Take to Sublimate in Space?
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A N-Body Simulations of Chaos in the Orbits of Trappist System Planets
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B Map of M87 Galaxy & Universe: Find & Explore Here!
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B 'Universe Breaking' results from JWST -- What does this mean?
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B Deriving the Approach Velocity of Meteorites
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I Research paper and sources investigating Earth's moons
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I Do Emission and Absorption Spectra Match? A Non-Physics Minded Tourist's Guide
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B Forming Stars/ Brown Dwarfs by photo-erosion
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A Stephen Hawking's doctoral thesis is available online
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I Estimating Mass of Central Object Using S2's Orbit Motion and Kepler's 3rd Law
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I What Milky Way stars could go supernova to < +3 at any time?
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B Why is this JWST paper a cause for 'Panic'?
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B Can a T-tauri star degenerate into a Brown dwarf?
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B Formation of Brown Dwarfs in filaments?
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I 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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B Who was the first person to recognize the stars as very distant suns?
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A Does the invariable plane of the Solar system have axial precession?
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I Could Dark Matter Be Stray Exoplanets or Collapsed Stars?
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B What is the best source for this star data? (M44 Beehive Cluster)
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B Hot white dwarfs and pre-white dwarfs discovered with SALT, MNRAS
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B What is the “Unknown physics” of the new Kilonovae explosion?
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I Some reasoning about Alfvén’s frozen-in flux theorem
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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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I What is the basic definition and application of the virial theorem?
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I Cosmic Microwave Background Surveys
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B Planetary Orbits - Elliptical or Wavelike?
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I Electron-Positron Pair Instability Supernova
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A Black holes: merged remnants have similar spin - why?
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B The green comet is just a weak smudge now
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B How Do Gamma Ray Bursts Compare to Man-Made Plasma Emissions?
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I What Causes the High Tide on the Antipodal Side of the Earth?
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