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 Question on Smolin's theory on Black Holes and new Universes
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Graduate Space Bending: Questions & Answers
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Graduate Massive galaxy cluster could upend theory of universe evolut
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Graduate Infinite Universes: Imagining Life Forms & Math Limits
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Undergrad Trying to understand black holes
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Undergrad WMAP or Planck Maps (cartesian projection)
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Graduate Did Antimatter Annihilate Matter During the Big Bang?
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High School Jupiter gets up in Mercury's business - what happens next?
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Spectacular Spiral May Encircle Milky Way
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Graduate Is Quantum Cosmology a Viable Path to Understanding the Universe?
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Graduate Is this evidence for a space-time continuum?
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Graduate Is the universe an adiabatic system?
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Graduate Binary Star Inclination Angle probability distribution
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Graduate Depressurization in Space: Estimating Time and Effects of Meteor Penetration
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Graduate Dennis Overby article on Merging Black Holes
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Mercedes concept "mobile living space"
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Graduate Cosmology: Static Universes and Negative Curvature
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Undergrad A question about Black Holes and their Gravity
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Graduate Why not an eternal and infinite space?
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Graduate Gyrochronology: A Spin-Down Clock for Cool Stars
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Graduate What Secrets Does the Milky Way's Core Jet Reveal About Galactic Dynamics?
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High School Planetary motion as perpetual motion?
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Graduate Will a Rocket Reach a Distant Galaxy Moving Away Due to Space Expansion?
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The problem with the "Big Bang" .
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How can I find the distance between Epsilon Indi and Tau Ceti?
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Undergrad Reading of planets billions of light years away
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Graduate Planetary orbit disruption by passing stars
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Graduate What new theories are being proposed to explain the beginning of the universe?
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Graduate How the last days look like just before a tidal lock?
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Graduate Forming Strange Quarks in Strange Stars
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Graduate How Did Quantum Fluctuations Contribute to the Creation of the Multiverse?
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Graduate Can Life Exist in the Universe or Multiverse After the Big Crunch?
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Undergrad Converting/Creating Coordinate Systems for Other Planets?
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Graduate Can someone check my work for this problem I thought of?
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Graduate What is the value of k in the Moon's orbital precession?
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High School Best way to see Andromeda galaxy
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Graduate A Brief History Of Time (Stephen Hawking) FAQs -- Big Bang & Multiverse question
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Undergrad Do tidal forces slowly make orbits more circular?
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Graduate Baryon acoustic oscillations and sound horizon
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High School How big does a mass have to be before gravity
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Graduate Boltzmann equation for the early Universe
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Graduate Time - How Long was the first second?
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Undergrad Discover the Spectacular Sky Color on a K4.5V Main Sequence Star"
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Graduate Mass Inflation Instability in Kerr and Reisnerr black holes.
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Graduate How Do You Calculate the Correct Launch Window for an Inclined Orbit Around Io?
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Undergrad Why are there galaxies everywhere we look?
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Graduate Remind me why FLRW curvature can't switch between cases
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Undergrad Simulating Planetary Collisions: Outcomes & Results
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High School Can Small Bangs Create Mini Universes?
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Graduate Could Dark Matter be composed of neutrons?
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Graduate Calculate Sun and Moon Astronomical Parameters with VSOP87 Accuracy
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Graduate On the mathematics of interstellar colonization
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Undergrad Can i create a star from Jupiter?
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High School Why Equator only exists for a rotating body like Earth?
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Graduate Can indirect searches for DM provide insights into candidate particles?
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Graduate Pandora (Borderlands): Is this planet possible?
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Graduate An article on a possible alternative to dark energy
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High School Revolution of Planets: Rotation & Revolving Around Stars
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Graduate Where did Schwarzschild get his information for his black hole model?
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Graduate Can Inflation Avoid Selfreproduction?
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Graduate Steinhardt 16 Dec on inflation (+alts) and spirited debate
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Graduate How can superconductors be used to protect spaceships from radiation in space?
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Graduate How can we sure that physical laws are always the same in al
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Graduate Neutron Star Collapse: Q&A on Physics and Observation
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Graduate Creation of spinning neutron stars and pulsars
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Graduate Gravitational Interferometer and Kalman
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Graduate Planets collapsing into black holes?
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Graduate Inside a black hole, looking out
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High School Book recommendation on Binary systems
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Graduate Cosmic rest frame, comoving distance, and proper distance
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Graduate New Planck mission results, Ferrara December 1-5
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Undergrad Calculating Luminosity from Brightness: Where Did I Go Wrong?
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Where Can You Explore the Universe from Planck Scale to Cosmic Scale?
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Graduate Expanding Universe: Is Kinetic Energy Behind Acceleration?
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High School The 15 Million Degree Pinhead: The Sun's Core Materialized on Earth
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Graduate Percentage of Matter, Dark Matter and Baryonic Matter
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Graduate Radical new take on *uni*verse questions by Smolin, could be important
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High School Discovering Earth's View from Epsilon Indi: Answers by Chinspinner
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High School What are the atoms floating in space
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Graduate Three Important Questions (about black holes and the Big Bang)
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Do Some Stars Possess A Particular Name?
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Graduate Oberth Maneuvers Using Sun, Jupiter & Saturn: Formulations & Assumptions
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Are there any caves on the Moon?
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Graduate Sign swapping - spacelike intervals
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Undergrad Measuring the Movement of the Stars
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Undergrad How to Identify Polar Day and Night Seasons?
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Graduate Question about gravity and the shell theorem
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High School Direction in Space: Do We Launch Straight Up from the North and South Poles?
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High School What is Stellar Flux and How Does it Affect Solar Wind?
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Has Anyone Played Space Engineers?
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Graduate Do quantum fluctuation particles create gravitational effect?
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Graduate Why does surface area of an Event Horizon increase?
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Graduate Sagittarius A* and its event horizon
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Undergrad Question about Space -- Is Space itself a 4th dimensional object?
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Graduate Could Dark Matter Be the Source of Anomalous X-ray Emissions?
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Witnessing Geminids: Slower Meteor Shower Speed
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Graduate Physical meaning of max. proper distance at time of emisson
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Graduate Entering a black hole theoretically of course
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Graduate How Does Entropy Influence Hawking Radiation in Black Holes?
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Graduate Finite Universe: Viewing All Timelines of the Universe
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