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 Analogue Black Holes: Disposal?
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Undergrad How big a lunar radio telescope to detect Earth-like signals?
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High School Question: Orbital mechanics of a binary star system
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Stargazing Meteorite crash recorded on video in Canada
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Undergrad What affects light near black holes and stars?
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High School More scope refurbishments or start new?
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Stargazing How Did You Capture the Mars Occultation? Share Your Photos Here!
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Undergrad Nature paper on Moon's initial evolution - Tidally driven remelting
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Undergrad The Heavier Elements: A Question About Their Abundance
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Undergrad Moon phase ruins my Stargazing!
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High School Help w/ repairing/refurbishing an equatorial mount
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High School Does my theory about black holes make sense ?
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Undergrad Expansion of a star to become a red giant
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High School Considering a budget observatory
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Undergrad How to graph Earth's path?
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Undergrad Possibility of multiple planets sharing the same orbit?
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High School What If We Could See the Past by Placing a Mirror on the Sun?
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High School Popular physics - The Nebra disk
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High School Can a thunderstorm affect a satellite in low earth orbit?
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Undergrad Is this the correct representation for showing the direction of a star on CMD?
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Graduate Where to find black hole datasets
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Graduate XSPEC Composite Model Partial Flux Calculations
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Graduate Spectral Data Availibility
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High School Can nature do this in the night sky?
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Stargazing Is My Heavy, Slightly Magnetic Rock with Green Glass Particles a Meteorite?
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Undergrad Does light bend around black holes?
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High School Predicting frequency of Earthlike planets and systems
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High School Neutron star 4U 1820-30 spins at 716 revolutions per second
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Undergrad New Developments In The Search For Planet X
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High School Looking for Axions in Neutron Stars
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Undergrad Right ascension and Declination calculations
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Undergrad The brightness and linear polarization of pulsars
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High School Optimizing Exposure Times: Balancing Efficiency and Image Quality
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High School Strange cosmic particles in my detector
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High School Variation of Apparent Luminosity with Distance
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High School The Earth is upgrading with a second moon
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High School Asteroid 2024 RW1 - entered Earth's atmosphere over Luzon, Philippines
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Undergrad Rotation curve of a gas disk in an elliptical galaxy
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Graduate Looking for information about spectroscopy isotopes and stellar formation
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Undergrad J0524-0336, surprisingly high Li concentration
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Undergrad Can there be free electrons in interstellar gas?
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Graduate Does modified gravity somehow explain galaxies that don't need it?
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Undergrad Regarding the accuracy of the description of a pulsar in a 1977 paper
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Undergrad Wow! signal could be from interstellar hydrogen clouds
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Undergrad Comet A117uUD Goes Interstellar after Encountering Saturn in 2022
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High School Will we ever communicate with extraterrestial life in a reasonable time frame?
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High School What Are the Mysterious Zig Zagging 'Stars' in the Night Sky?
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High School Temperature difference between Venus and Mercury
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High School Asteroid Dimorphous easier to move because it's made up of rubble?
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Graduate N-Body inputs from Keplerian Orbits
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Graduate Efficient cone searches with Healpix-alchemy
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Undergrad What Factors Create the Windiest Exoplanets?
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Undergrad Any Galaxy (Milky-way) based coordinate systems?
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High School Interstellar navigation to Proxima B with an unmanned probe
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Undergrad Galaxy collision separates dark matter from regular matter
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Stargazing Any Heliocentric planetrorium software or site?
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Stargazing Some photos of Antares and Sigma Sagittarii (Nunki)
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Undergrad Shell structure topological defects as substitute for dark matter
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Undergrad Stable solutions to simplified 2- and 3-body problems?
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Undergrad Very bright geo satellite in my night sky?
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Undergrad What is the Possibility of Habitable Planets Around Brown Dwarfs?
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Undergrad Why can't we photograph magnetic lines of force emitted by planetary and beyond objects (like we can for the Sun)?
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Undergrad Early Universe massive Black Holes question
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High School Questions about dark matter/energy
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Undergrad Galaxies as systems extended from the solar system
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High School Why is the CNO Cycle considered catalytic in stellar nucleosynthesis?
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High School Is the Universe older than we think?
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Undergrad Does Organic Matter Experience Gravity on the Moon?
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High School Is the Sun's Magnetic Field About to Flip?
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High School Question about the Silicon-burning Process beyond iron
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Stargazing How Can You Capture Stunning Moon Photos with a Remote Control?
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High School A question regarding Heliocentric Latitude
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Graduate Very last pulse from a neutron star
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Graduate Should luminosity distance be 0 at z=0?
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High School Dark Energy: Are We All Missing The Obvious?
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Undergrad Unknown Radio Signal from Space Repeats Every Hour -- Usually
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Undergrad Is the Universe Truly Infinite?
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High School Asteroid 2024 BX1 entered Earth's atmosphere over Germany 21 Jan 2024
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Stargazing What can I see with 10x50 binoculars in Bortle class 4?
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Undergrad Retro/prograde flyby galaxies and their bar formation
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High School Are some objects in the night sky just older images of other objects?
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High School Question about Neon-burning Process
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Undergrad How Does Vera Rubin's Research Support the Existence of Dark Matter in Galaxies?
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Undergrad Observational Astronomy Project Ideas to Show Special Relativity
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Stargazing My photo of Jupiter (I think)
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Stargazing Dark matter and its effect on the orbit of stars
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Stargazing Documenting the setup of my new telescope
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Undergrad Deriving the Roche limit(d) for body of mass M and satellite m
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Undergrad Questions about Black Holes, Hawking Radiation, and Dark Matter
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Undergrad Can time on elliptical orbit be expressed analytically?
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Undergrad Light curving around vortex simulating a black hole
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High School U.S. Solar Eclipses - Oct. 14, 2023 (Annular) & Apr. 08, 2024 (Total)
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Undergrad Determining stellar mass independent of its gravity
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Graduate Why Do Novas Emit Visible Light Despite Nuclear Reactions Producing Gamma Rays?
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High School NASA names asteroid "Hossi" after Sabine Hossenfelder
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Undergrad Why on Earth do we not see older stars close to us?
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High School Solar Wind Particles, - reaching into Earth's magnetic field?
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High School What Are Quasi-Moons and How Do They Orbit Earth and the Sun?
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Undergrad Need help simplifying standard error formula for redshift
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Stargazing 'Devil' comet visible tonight 21.04.24
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