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.
Stargazing The What telescope are you using thread
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Can't actually see anything through the eye piece
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Graduate Bianchi Models and Kantowski-Sachs
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Graduate CMB and Absolute Rest: Resolving Contradiction
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Graduate Finding a constant in an expanding universe
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Graduate What is quintessential inflation and why is it considered fine-tuned?
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High School The idea of the universe repeating itself is troubling me
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High School What would gravity be in these 2 conditions
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Graduate Higgs field in the early universe
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Graduate Increasing energy scale in an expanding Universe?
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Graduate Recommendations for astrophysical simulation software.
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Stargazing Remote Telescopes for New or Old Astrophotographers
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Graduate Can Black Holes Have Poles Like Planets?
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Graduate Faith of Quantum Entanglement once it enters two different black holes
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Graduate New paper says universe not expanding - should it be taken seriously?
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Graduate The Hawking radiation and information paradox
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Undergrad How to calculate absolute magnitude of a stellar body?
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Graduate Definition of hypersurface orthogonal
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Graduate Why does the furthest stars seem to be moving away faster than light?
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Graduate Are Flat, Coplanar Orbits Only Found in Spiral Galaxies?
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Stargazing Can a Simple 80x Telescope Reach Maximum Resolution?
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Graduate Question about the CMB and WMAP
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Undergrad Apparent Magnitude: Understanding Star X's Brightness
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Graduate Do clocks speed up in an expanding Universe?
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Graduate Understanding Dark Matter: A Simple Explanation
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Graduate Dark matter and weighing galaxies
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Graduate BOSS questions cosmological constant (undecided)
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Graduate Expanding universe - energy/information conservation
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Graduate Finding the mass of a super-massive Black Hole?
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Graduate Dark Matter Formation: Exploring Big Bang Theory
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Graduate Cosmic Dynamics - Cosmological Constant
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Graduate Is Dark Matter Filling the Universe's Voids?
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Graduate A question on the meaning of dark energy
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High School Why do I see stars as a point in the sky?
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Undergrad How to look at stars to go back in time?
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Graduate Is the universe really expanding?
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Graduate What Evidence Supports Sagittarius A* as a Supermassive Black Hole?
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Undergrad Amount of solar energy per day in a given location
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High School Are There Many Suns in the Universe? A Debate
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Graduate Establishing a Mutual Coordinate System for Interstellar Communication
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Graduate "Implausibly Large Structure" in the Universe
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  • Poll Poll
Undergrad Are Black Holes Really Black or Just Colorless Void?
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Graduate Doppler Effect on Light: Understanding Blue Shift in Starlight & X-ray Formation
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Graduate Could Dark Matter Be A Property of Space?
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High School Jupiter: Gas Planet? Landing Possibility & Facts
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High School Why does the Sun appear to change color throughout the day?
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Undergrad Measuring Earth's Orbit: Methods and Distortions Explained
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Graduate Hubble's Law and Acceleration: Are Distant Objects Accelerating Away from Us?
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Undergrad Why does the speed of light never slow down?
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Graduate Will the Cosmos Expand Forever or Collapse?
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Undergrad What Are the Best Resources for Understanding Star Clusters?
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Graduate Where does new space come from as the universe gets bigger?
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Graduate A couple of questions about singularities
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High School Can a triple star have a planet around it ?
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Can Pluto Regain Its Planetary Status by Cleaning Up Its Orbit?
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High School How Do Objects Hang in Outer Space?
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Graduate Sun can absorb almost 200,000 more Suns?
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Graduate Do heavier elements break down during supernova?
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Graduate The beginning for time for beginners
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Undergrad From nothing & nowhere to everything.
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Graduate Hawking Radiation and the Decay of Black Holes
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Graduate Status of Cosmic Strings and Stringy Inflation
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Graduate Could light explain dark energy?
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Graduate Is The Universe A Closed System?
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Stargazing Telescope that can easily be connected to a laptop
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Graduate A model of galactic star formation
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Graduate Dark energy and the CMB cold spot
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Graduate The first realistic virtual universe created
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High School App/program that allows you to adjust spectrums of light?
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Graduate Does Interstellar Gas Affect Atmospheric Seeing in Ground-Based Observations?
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Graduate Is Our Universe a Black Hole?
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Graduate Radius of the smallest exoplanet detectable with the transit method
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Undergrad How do we find the exact temperature of a star/galaxy?
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Graduate How is dark matter distributed in the Milky Way and what effects does it have?
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May 5, 6 - Eta Aquarids Meteor Shower
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Undergrad Titan vs Earth: Hydrocarbons vs Water - Pros and Cons for Thriving Life Forms
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Graduate Dark energy versus cosmological constant
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Graduate How could Einstein's theory contradict to the quantum mechanism?
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Graduate Inflation and superluminal expansion
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Graduate Conserved charge in FRW expansion
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Undergrad Calculating the % hydrogen and % helium
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Graduate Cosmological Constant & Fine Tuning for Life
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Graduate Number density/average distance relationship question
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Venus Jupiter and Moon Conjunction HD Timelapse
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Undergrad What Are Black Bodies & Why Are Stars Considered Them?
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Graduate Something or nothing, which is more supported?
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Graduate How is the scale factor related to redshift in the FRW model?
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Graduate Do contracting objects show red shift?
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Undergrad The Meaning of 'Proportion' in Richard Feynman's Views on the Universe
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Graduate Understanding Black Holes: Questions, Equations, and Theories
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Graduate First Hyper Velocity Star Cluster Observed
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Stargazing Expert Astrophotography Tips & Discussions | Share Your Photos!
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Stargazing What's Happening in the Night Sky? Upcoming Astronomy Events to Look Out For!
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Graduate Light-cone cosmological simulations
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Graduate Travelling to the edge of the Universe, 4th Dimensional Time Travel
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Graduate MOND : Help with fitting procedure
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How Fast Does Beta Pictoris b Spin?
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Graduate Can dark energy reveal absolute motion?
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High School Question: Expansion of the universe
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Undergrad Could a planet get heavier without needing to grow in size?
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