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.
High School Am I attracted to a hydrogen atom 1 billion light years away?
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Undergrad Location of the magnetopause using Chapman-Ferraro equation
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Graduate NASA's DART spaceship has hit the Dimorphos asteroid: what now?
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Graduate Why the James Webb Space Telescope needs propellant
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High School Why Does an Einstein Ring Have Four Images?
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High School Difference between autumnal and vernal equinoxes
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Undergrad Resolution of observation telescopes?
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Undergrad Can astronomical observation take place in daylight in Antacrtica?
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Undergrad Is El Gordo's Collision Velocity Challenging ΛCDM?
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High School SubNeptune planet K2-18b shows methane and dimethyl sulfide
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High School Questions about relative Space-Time in the Universe
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Undergrad Surely the 2nd Law of Thermodynamics is defied by gravity?
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Undergrad Working model to demonstrate Lagrange points L4 & L5 -- possible?
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Undergrad Formation of rocky planets without a star
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High School Do changes in speed always affect orbit size, and vice versa?
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Undergrad Formation of jets with accretion disks at black holes
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Undergrad Inquiry Regarding the Determination of the Galactic Disk's Outer Bound
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Undergrad Why Didn't Henrietta Leavitt Sign Her Own Discovery Paper?
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High School A Question about Cosmic Background Noise
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Undergrad Comparing the formation of the atmospheres on Earth vs Venus
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High School More Evidence for MOND -- Globular cluster galactic acceleration imprint
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Undergrad Obtaining Transit Spectrum for Celestial Bodies Using JWST NIRSPEC
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Graduate How to convert mW/m^2 to W/m^2/nm?
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Undergrad What is the accuracy of parking spacecraft into Lagrange points?
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Undergrad Longest day of the year is June 21 but longest daylight is June 26?
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Graduate Advice needed for exposure time computation for galaxies
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Undergrad Anyone know about the bolide across the Gulf Coast Fri July 14, 2023?
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Undergrad Error in Euler angles and quaternions
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Undergrad Without degeneracy, when would Solar cores collapse?
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Stargazing Question about my photos of a Full Moon -- What is this point of light?
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High School Can BepiColombo Detect Microbial Life on Mercury?
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Undergrad Lines of stars that we see in the sky
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Undergrad Mass measurement of galaxies with non-gravitational means
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High School Beware of "truthiness" in astronomy in seemingly reliable websites
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Undergrad Which one is Antares in this photo?
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Undergrad Distinguishing between the effects of dark matter and MOND
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Undergrad Release of trapped light during supernova
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High School The Sun's Influence on the Moon's Orbit: Is it Negligible?
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Undergrad I need some support, please, for a gravity assist analysis
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Undergrad Circular polarization and linear polarization of pulsars
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Undergrad Spectral class temperature range
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Undergrad Velocity of a given planet relative to the Galactic Center
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Undergrad Is anything not spinning in the Universe?
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High School The fastest spinning and possibly the youngest magnetar known
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Undergrad NANOGrav results on Thursday (June 29)
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Undergrad What is theorized to be the coldest white dwarf in the Universe?
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Undergrad Solar internet problems in 2025?
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Stargazing Inquiry Regarding Hypothetical Faster-Than-Light Travel Scenario
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Undergrad Testing for dark energy using the Local Group
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Undergrad Oblate Ellipsoid: Can Earth Be Modified?
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Undergrad How to find Heliocentric latitude data for each planet?
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Undergrad Thoughts on this article: The Universe Is More in Our Hands Than Ever Before
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High School Questions about Supermassive stars in the Milky Way Galaxy
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Undergrad Any evidence of white holes in the Universe?
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Undergrad How is there any pressure at all in isotropic radiation?
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High School Has Earth Lost Its Status as a Planet?
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Undergrad Star with quadrupole in a binary system violates Newton's 3rd Law?
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High School What is a parsec and how is it measured?
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Undergrad Measuring the Velocities of Astronomical Objects in the Milky Way
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High School Glimpsing Orion's Setting in the Western Sky
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Undergrad Comet Bernardinelli-Bernstein enters inner solar system
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Undergrad Early Catalog of Planet-Hosting Multiple Star (≥ 3) Systems
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Undergrad Gravity inside an exponential mass disk
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High School Saturn's 145 Moons: The Latest Discoveries and What Sets Them Apart
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Undergrad 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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High School When Would Planets Go Dark if the Sun Went Out?
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High School What caused the recent supernova in the Pinwheel Galaxy?
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Undergrad Discovering the Truth About Antares: From Young Red Supergiant to Blue Giant
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High School How can the Universe be flat? Ridiculous
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Undergrad Where can I find publicly accessible data from observatories in Europe?
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High School At what distance would a Venus-like planet have a HZ temperature?
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High School Night Sky of Alpha Centauri: Sol as a Bright Star
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High School How bright is the Sun compared to the sky?
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High School What Would Happen to the Elements in the Human Body If Teleported to the Sun?
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High School What's a good website for aurora forecasts?
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Undergrad Was Electroweak Symmetry Breaking in the Early Universe Controversial?
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Undergrad What Could Cause the Earth's Rotation to Dramatically Slow Down?
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High School Ken's Constellation Query: Viewing Same Constellation in AUS & SA
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Undergrad Calculating Proportional Luminosity of Fictitious Star
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Undergrad Runaway supermassive black hole?
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Undergrad Is the light from Andromeda truly blue shifted?
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Stargazing Huge daytime fireball over Israel earlier today
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High School Exoplanet TOI-4603 b, ~13x Jupiter mass, ~1.04 Jupiter diameter
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Graduate Please express this theory of mine mathematically or through equations
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High School Ultramassive Black Hole (UMB), 30 billion solar masses?
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High School Are the stars that we see in constellations within the Milky Way galaxy?
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High School Circumgalactic Black hole imaged by the Hubble Space Telescope
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High School AI Enhanced image of M87 black hole
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High School Discover Jupiter's Mysteries with James Webb Space Telescope
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High School How many astronomers use JWST data?
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High School Vulpecula, pulsars and neutron stars
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High School Uracil found in carbonaceous asteroid
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Graduate As stars contract, why does total entropy rise?
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High School Why do people not notice the equinox when it happens?
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Undergrad Do supernovae generate neutrinos or antineutrinos?
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Undergrad If GRB-221009A had been in Milky Way, would we have been fried?
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Undergrad What Can We Learn About Stellar Nucleosynthesis at the NIC-XVII Symposium?
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High School 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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