Astronomy, Astrophysics, Cosmology Forum

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Join in expert discussion on the topics of Astronomy, astrophysics and cosmology. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
Graduate How does one compute frequency bandwidth based on FWHM
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Undergrad Was Dark Energy Dominant Over Matter in Early Universe?
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High School The singularities of gravitational collapse and cosmology
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Undergrad Does the newly measured expansion rate change the odds for Big Rip?
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High School What are these bright spots in this zoomable image of the Milky Way?
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Undergrad Expansion of the Universe question
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High School How to find inverse steradian from arcmin^-2 for density of galaxy
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High School If the universe were played in reverse, how would it differ?
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Undergrad Universe younger and faster than thought
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Undergrad Will the Big Rip basically be the Big Bang for the next universe?
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Undergrad What is the Most Accurate Mass for Rigel?
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Undergrad Discovering Sedna: The Mysterious Red Planetoid Orbiting the Sun
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High School How prevalent is the R language in astronomy research?
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Undergrad Why are pictures of galaxies so clear?
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Graduate Interplanetary electromagnetic field
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Undergrad Is the age of the Universe "boundless"?
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Graduate Dark Matter Halo + Virial theorem Q.
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Graduate Different FRW Cosmological Models
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High School What A White Hole Will Look Like?
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Undergrad Provide me the paper by Peebles,P.J.E 1980 and 1993
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Graduate R136a1: The Most Massive and Luminous Blue Hypergiant Star
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Undergrad Typical light levels at Mars's surface
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High School What does 4 D spacetime look like?
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Undergrad Helium Hydride data, Early universe chemistry evidence?
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Graduate Recent mass estimates for Milky and the Local Group
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Graduate How Many Stars Can Detectable Wobbles Reveal Extrasolar Planets?
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Graduate Anti-Matter- Regular Matter- Pulse Collisions?
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Graduate Black hole singularities and negative space-time
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Graduate New and Improved: Elliptical Transfer Orbits determination procedure.
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Graduate Calculating the Sun's Bending Angle on a Ray of Light
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Stargazing Our absolute speed in the cosmos
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Graduate Coronal Rain -- an interesting article
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Undergrad How can an expanding Universe look homogeneous?
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Undergrad Could a fully convective Sun double its lifespan?
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Graduate Abundance and mass spectrum of PBH
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High School [Curiosity] Are there any central databases of Red Shift?
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Stargazing Short videos on the Messier catalog of deep sky objects
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Undergrad Why the Moon always shows the same face
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Graduate Why the fine-tuning argument for improbable existence is a fallacy
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High School A different take on the M87 black hole
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Undergrad Disappearing lakes on Titan - seasonal cycles
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Undergrad Uncertainty Over Sextans Galaxies' Group Membership
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Undergrad Are Galaxies Gravitationally Bound?
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Undergrad Does a solar eclipse gamma of 0 mean eclipse goes through 90° altitude?
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High School Any updates on the first-ever Parker perihelion results?
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Trying to get a pen to work in so little to no gravity in space
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High School Could accelerating expansion be caused by a "spinning" universe?
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Undergrad Exploring the Gravitational Pull of Black Holes: A Perspective on Safe Distances
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High School How common for almost same solar eclipse 17 months later?
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Undergrad M87 Black Hole Photos and the Spin Orientations
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Undergrad Can black hole studies shed any light on dark matter
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Undergrad Is the Divisor (2π)^3 Necessary in Photon Gas Equations?
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Graduate Question about Condensation of Space
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Graduate Can Space Itself Store Energy?
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Undergrad Orbital velocity of a craft at 4km above the Moon's surface
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High School Is This the First Image of a Black Hole?
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Undergrad Observation of the Messier 87 Super Massive Black Hole
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Undergrad Could the kinetic energy of space junk be recycled?
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High School Gravitational Wave Interference Graphical Computer Simulation
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Undergrad Dark Plasma charged under unbroken U(1)' gauge interaction
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Graduate Ideas for determining the volume of a rotating object
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Insights How to Create a Universe - Instructions for an Apprentice God - Comments
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High School Earth Orbits of Geostationary Satellites
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Undergrad New LIGO/Virgo event (08-Apr-19)
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Undergrad Probability distribution of angle of asteroid entry to the atmosphere
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High School Temperature regulation in Earth orbit
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Undergrad What is the minimum mass of a neutron star?
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High School Orbits of galaxies in the Coma Cluster
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High School Why can't we see dark matter in the solar system?
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Undergrad What is the definition of the entropy of the Universe?
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Undergrad What would the universe look like without dark matter?
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Undergrad Does the Friedmann vacuum equation have a linear solution?
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Undergrad Is Late Water Flow on Mars Linked to Climate Change or Permafrost Melting?
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High School Absorption of electromagnetic radiation
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Undergrad Expanding universe needs a big bang?
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High School How does the Earth move through in 3 separate trajectories?
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High School Visual simulation of gravitational lensing
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Undergrad Why can't LIGO detect collisions of super massive black holes?
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Undergrad Is the Minkowksi/Einstein Block Universe theory science?
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Undergrad Would a HEMP event cause the northern lights?
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High School How Does Telescope Magnification Differ from Resolving Power?
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Graduate Dark Matter Accretion Disk for Black Hole (Neutron Star)
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Undergrad Understanding Negative Inclination Orbits in Space Science
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Stargazing Efficient Follow-Up of Exoplanet Transits Using Small Telescopes
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Graduate Solving a Cipher: Celestial coordinates and precession
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Undergrad Northern lights and the magnetic field
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High School 83 quasars right up against the Event Horizon
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Undergrad Can the MOND theory be experimentally tested?
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Undergrad Main Sequence Rules: Definition & Interpretation
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Undergrad What would a big crunch look like observationally?
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High School Is there a standard mapping of celestial coordinates to geo-coordinates
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High School How to explain "the right hand rule" to an alien universe
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High School Question about Preventing Tidal Locking around Red Dwarf Stars
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High School Convection in Stars: The Role of Mass and Structure in Fuel Consumption
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Undergrad Exponential expansion and the Cosmological Constant
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High School What Drives the Gravitational Waves in Black Hole Ringdown?
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Graduate How deep in a gravitational well are we?
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Undergrad Imaging galaxies receding at a velocity that exceeds c?
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High School Red Dwarf Stars - Planet Habitability around "Flare Stars"
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High School Does being tidally locked affect a planet's magnetic field?
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