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.
Undergrad Quick question about negative declinations
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Undergrad Maintaining orbit around the moon
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Graduate Million Kelvin gas clouds? Really?
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Graduate Formula for the star density of the milky way?
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Graduate Mechanism for generating the energy in supernova
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High School Has Andromeda Moved Closer in 2.5 Million Years?
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Undergrad No Earth, No Gravity: What Would it Be?
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On which altitude does the heaven turns in black?
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Undergrad How can knowing parallax of a farther object help with finding a nearer object?
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Undergrad Milkyway Black-hole vs Andromeda Collision
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High School Astrophysics Prerequisites Question
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Graduate Largest Structure in Universe: 4B Light-Years Long LQG
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Undergrad Did Astronauts Face Dangerous Radiation During Apollo Missions?
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Stargazing Celestron UpClose Porro Series 10-30 x 50 Zoom Binoculars
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Undergrad Is KOI 172.02 the Most Earth-Like Exoplanet Discovered?
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Graduate Is the Local Fluff Causing Warming in Our Solar System?
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Undergrad What is the Solar Constant in the Kuiper Belt?
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Graduate Accelerating Universal Expansion
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Graduate Velocity Dispersion Questions - Shounak
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Undergrad What is the Role of Earth's Axis in Copernican Astronomy?
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High School Unraveling the Mystery of Sagittarius A and A*
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Graduate Projected Separation and 3D Distance Problem (Code Included)
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Graduate Role of Strong Force in Neutron Stars
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Graduate What's the Deal with Astrophysical Jets?
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Graduate Relativistic at freeze out? Definition of HDM
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Undergrad Exoplanet Maps: Northern and Southern Hemisphere Locations
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High School Does the Milky Way Orbit Anything? Investigating Our Galaxy's Center
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Graduate Does dark matter act as a medium for sound to go through?
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Undergrad How does Angular Momentum relate to the rapid rotation of Pulsars?
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Undergrad Stars heat up when they lose energy
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Graduate Exploring Beyond Absolute Zero: Thermodynamics Re-examined
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Undergrad How Does Gravitational Lensing Bend Light in Space?
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Undergrad Black Holes: Mass, Schwarzschild Radius & Size
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High School The Universe. Orderly, Chaotic, or some of both?
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Undergrad Is it possible at all to go faster in an orbit around the earth?
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Undergrad Calculate Mass of Moon from Earth & Diameter
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Graduate Planck Intermediate Results. IX. Detection of the Galactic haze with Planck
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Graduate Distribution of stars by Metallicity and Redshift
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Stargazing Zhumell Z12 vs Meade Light Bridge 10
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Can the moon be viewed an night at the same time from two positions 77deg apart
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Undergrad Which mathematical formulas are used in the search for extraterrestrial planets?
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Graduate Can Black Holes Be Used for Faster-Than-Light Travel?
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High School Earth revolves in eliptical path?
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Undergrad Launching an object into OUTER space
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Graduate Mass distribution and gravitational field
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Graduate Can We Determine the Center of the Universe Using Comet Orbits?
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High School Sun's path in the sky during Equinox if watching from equator?
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Graduate Explaining the Virial Theorem in Astrophysics
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Undergrad How will the pattern of stars in the milky way change over time?
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Graduate Black holes: Some astronomers detected flashes of x-ray in the cosmos
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Graduate Faber-Jackson Relation: Explained | Shounak
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Undergrad So the question is:Do all galaxies contain super massive black holes?
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Graduate Expansion of the Universe - Closed Universe
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Stargazing Is my telescope compatible with my latitude?
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Graduate Hydrogen Fusion Cycle in Stars: Storage/Transport/Consumption?
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Undergrad Elemental Abundance in Stars - The Curve of Growth
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High School Why Does the Sky Appear Blue? Why Can Stars See Us?
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Stargazing How useful are collimation eyepieces?
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Graduate How to keep the earth in the habitable zone
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Undergrad Ebb and Flow Effects: Impacts on Moon & Earth?
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Undergrad Can Excel accurately calculate planet positions in real-time?
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Undergrad Why are the centers of galaxies so bright?
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Undergrad Why don't we see the Geminids twice a year?
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Graduate Orbital period - Where does M1+M2 come from?
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Graduate Conditions necessary to form the first and simplest structures
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Graduate Formation of accretion disk / frame drag
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Graduate Is The Solar System Scale Invariant? A Thought Experiment
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Graduate Does spacetime stand on its own?
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Graduate Finding an Extrasolar Planet's Radius
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Graduate Uncertainty of distance measurements for regions between 50-250 pc away
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Undergrad What will the gravitational field inside the Earth be?
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Graduate Loop of pumped fluid slowly falling into black hole.
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Graduate Gravitational force Sun/Sirius > Earth/Sun?
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Graduate At what point would we discover a black hole headed directly toward us?
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Undergrad Solar System's orbit around galaxy, a concise 3D description?
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Graduate Surface brightness to luminosity
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Undergrad How Do We Measure Star Formation?
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Graduate Density of supermassive black holes.
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Graduate How can I calculate the visual magnitude of a star with only its flux data?
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Graduate Neutron star: smoothest surface in the universe?
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High School Stars of Constellations exist in what Spiral Arm of the Milky Way Galaxy?
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Undergrad What math does one need to know prior to learning Astrophysics
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Undergrad Eye of the storm at Saturn's north pole
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High School Visual respresentations of topics in Astronomy
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Graduate Can Quasars Really Emit Beyond Their Eddington Limit?
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Undergrad Why Hasn't the Moon Crashed into the Earth?
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High School How Are Black Holes Formed?
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Undergrad Could a Planet Thrive with Two Suns?
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Graduate Could Transient Radio Signals Indicate Extraterrestrial Intelligence?
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High School Is Astrophysics the right course for me?
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Game: Who correctly can guess this astronomical object?
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Stargazing Orion SpaceProbe 130 EQ question
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High School Force needed to move a free floating object through space
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Graduate Are Brown Dwarfs Part of the Main Sequence on the H-R Diagram?
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High School Big Bang Theory: Force & Surface Questions
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Ice on Mercury in polar crater shade
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High School Why Can We See the Corona Sphere During a Solar Eclipse?
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Undergrad Is the Universe really infinite/absolute 0
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Graduate Flux Density (Jy) to Luminosity when wavelength is involved
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Graduate 'Over-massive galactic black hole discovered
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