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.
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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Graduate How Are We Pushing the Concept of Infinity in Multiverse Theories?
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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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Graduate Aether Theories: Consensus on What Space is Made Of?
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Undergrad Elemental Abundance in Stars - The Curve of Growth
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Graduate Time Delays Across Saddles: Probing Modified Gravity in the Solar System
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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 Quantum Entanglement vs. Now Slices (Relativity)
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Graduate How to keep the earth in the habitable zone
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Graduate Inflation as a solution to the Early Universe Enrtopy problem
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Graduate Emergent Gravity: Padmanabhan's Brilliant or Misguided Paper
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Undergrad Radio Transmission Power and Detection in Relation to Alien Communication
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Undergrad Ebb and Flow Effects: Impacts on Moon & Earth?
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Graduate What is the difference between the Big Bang and the exact same energy mass
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Undergrad Can Excel accurately calculate planet positions in real-time?
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Graduate Redshift / blueshift of light in a gravity well
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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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Undergrad Difference between Dark energy and Dark matter
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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 Big Bounce and varying constants
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Graduate Questions on dark matter and dark energy
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Graduate If the Universe is indeed finite(in volume)
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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 Planck 2013 Conference: April 2-5
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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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Graduate What Is the First Acoustic Peak in CMB?
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Graduate Is the following creation description useful?
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Undergrad Solar System's orbit around galaxy, a concise 3D description?
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Graduate What Other Evidence Supports the Idea of an Expanding Universe Besides Redshift?
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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 Big Bang Vs Inflationary Big Bang
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Graduate Dark matter/Energy not needed alternative
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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 Universe Expansion: What Am I Missing?
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Undergrad Eye of the storm at Saturn's north pole
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Graduate Universe Expansion: is it really expanding?
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Graduate What Is the Difference Between Dusty and Dust-Laden Plasma?
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High School Visual respresentations of topics in Astronomy
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Graduate What Holds the Universe Together?
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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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Graduate Need help on my understanding of gravitational waves
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Graduate Effect of negative gravity on time
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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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Graduate Spacetime Quantization and the Relationship between Energy and Frequency
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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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NORDITA , anything interesting?
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Graduate Flux Density (Jy) to Luminosity when wavelength is involved
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Graduate Spacetime line element to describe an expanding cube
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Graduate 'Over-massive galactic black hole discovered
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Undergrad Planets & Relativity: Time Dilation in Our Galaxy
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Graduate Effects of perpendicularly-approaching asteroid on Earth
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Graduate Is our universe actually contained within a black hole?
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Graduate Question on Cosmological Constant paper
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Curiosity Rover makes Earth shattering discovery
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Graduate Solar wobble - what are the effects of Jupiter and Saturn?
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Graduate Population III Stars Metallicity
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Graduate Omega effect: turning poloidal magnetic field into toroidal field
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Undergrad Any difference on Satellite location between W135 and W075?
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Cosmic Timeline: A Comprehensive SF History
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Graduate Cosmology - given omega_m and a static universe, find the range of values of q_0
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Undergrad How to determine elements based on received frequency from Space?
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Undergrad Matter and anti/matter after big bang
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Graduate Are Cosmic Asymmetries Challenging the Cosmological Principle?
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Graduate Classic Papers in Astronomy and Cosmology
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Graduate Are SN 1a light curves evidence of universal expansion?
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Graduate How can a star in the Milkyway be nearly as old as the universe?
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Graduate View of universe from event horizon of black hole
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Undergrad Calculations for sun position follower
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Graduate Black hole accretion: angular momentum loss
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Graduate What do broad and strong emission lines mean and what are the main types of AGN?
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Graduate Redshift of spinning star surface as seen on axis
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Which Authors Offer Recent Insights on Space/Time?
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