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.
Was Newton in Error? Philosophical Prejudice & MOND Theory
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Stargazing My Latest M-51: A Comparison with Previous Attempts
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Effect of Sun movement on Planetary orbits?
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How do astronomers calculate the distance to an object using trigonometry?
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Arizona Telescope: Did Big Scopes See Pluto Conjunction?
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What Are the Key Differences Between Astronomy, Astrophysics, and Cosmology?
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What If the Moon and Earth Were Twin Planets?
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Is the trampoline analogy an accurate representation of space-time curvature?
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Anyone own a Celestron 11'' schmidt cassegrain?
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Earth's rotational speed when its gravity is 5.0m/s2
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Radiative Transfer: Learn Physics - Free Reference Guide
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Acceleration, velocity, distance, speed and time help please
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End of the Universe: Light is the Final Frontier
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How Does Energy Influence Our Movement in the Expanding Universe?
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How Is Total Radial Velocity Determined in Binary Stars?
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How Do You Begin Your Journey in Astronomy and Astrophysics?
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Can Aliens See Events from the Past?
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L1 L2 Points: Influence & Model Dependence
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Questions out of curiosity… Enlighten me please
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What are the Detailed Steps and Mechanisms of Stellar Evolution?
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Lunar Laser Rangefinding: Testing GR's Gravitomagnetic Phenomenon?
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What Are the Key Insights and Fascinating Facts About Cepheid Variable Stars?
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Highlight something on MS word and press backspace
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Stargazing A rough calculation on the duration of lunar eclipse
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  • Poll Poll
Stargazing Watching the Lunar Eclipse on March 3rd?
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What is the vector equation for escape velocity?
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Access to astronomy journal articles
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Where Can I Find Data on Stellar Types and Their Locations in the Milky Way?
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Explain p-process in nucleosynthesis
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Charged particles from our Sun travelling too fast?
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Gamma Ray Bursters: Electrons, Anti-Electrons & Mass Exploding
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How Can Quantum Mechanics Illuminate Our Understanding of Astrophysics?
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Doesn't dust or debris collect at the L4 and L5 Lagrangian points?
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Astro simulation program problem - program bugs?
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How is a Comet Defined?
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Planetary formation and effects of gravity
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What would happen if I were to near and be consumed by a black hole?
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Formation of the Moon: A Vibrating History
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No big planets close to the Sun?
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Water on Mars: Separating Fact from Fiction - Textbook Deadline Approaching!
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Black holes, the sun and wormholes.
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Are craters on the moon randomly distributed?
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Does Uranus Have a Distinct Rocky Core?
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Are Long GRBs caused by PopIII hypernovae?
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I'm Living in the Astronomy Section
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Are other planets getting hotter like the Earth?
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Quick easy questionFormula for angular diameter?
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Astonishing Photo of Russian Rocket Booster Explosion!
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Where Can I Find the Mathematics in Nucleosynthesis?
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Is the Apophis Asteroid a Serious Threat and What is NASA Doing About It?
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Astrophysics Starter Guide | Find the Best Textbooks
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Stargazing First is the Blue Snowball , a planetary nebula.
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Temperature Effects of a Doubled Radiation Emission from an HII Region
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I know, lets launch a car into space
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Really Simple Circumference Question
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Eclipsing binary problem im really frustrated
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: Comparing Radii of Black Hole & Fast Moving Bodies
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Discover the Incredible Video That Will Make You Wonder
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Calculate Total Energy Radiated by Sun During Evolution
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How to Determine the Period and Separation of an Eclipsing Binary Star System?
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Having trouble with eclipsing binaries.
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What Are the Current Unsolved Mysteries in Astrophysics?
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How come we can see galaxies 9 B l/y away if universe is only 14 B y/o
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UMC Time, Right Ascension and Longitude
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Atmospheric Refraction: Converting Density Profiles to Refractivity
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Detecting transmission signal destinations
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Galaxy Collision: Will Milky Way & Andromeda Pass or Collide?
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Paradox of the Expanding Universe: Debunking the Big Bang Theory
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Black Holes in a Newtonian (non-Einsteinian) World
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Tolman surface brightness test -
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Stargazing Build Concave Mirrors Up to 1.5M Dia: Design a Grinding/Polishing Machine
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Public Star Parties: Learn What to Expect at Your First Event
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How do we determine what's in the core of stars/planets?
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Neutral electron gas in galaxy halo?
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Uranium and supernovae explosions
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Creating a Realistic Virtual Universe: An Astrophysics Problem
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Astronomy Olympiad: Questions & Discussion
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Are hotter stars always brighter?
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Equation for Solid Planet Structure
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Round trip to earth in a straight line?
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What is the identity of the enigmatic I in this timeless puzzle?
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How do we really know the universe is expanding?
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Sun's Polar Shift on 2012 coincidence?
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Star Density Should be a piece of cake
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Can Any Theory Unify Wave/Particle, Space/Time, and Energy/Mass Dualities?
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Birght comets like Comet McNaught
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Experiment with multiple instrument places all over the earth
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Calculating Solar Constant at Sunset: How Much Energy Will Be Received?
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Does Andromeda contain dark matter?
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Space Wars: US Plans for Dominance and Monopolization
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Two identcal spiral galaxies A and B w/ equal & opposite momenta merge
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Explore the Universe with an Astrophysics Simulator - Download Now!
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Comet McNaught: The Brightest in History?
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How Long Does It Take To Orbit Our Galaxy
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Is a Sunshade the Solution for Earth's Drought and Heat?
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Discover Earth's Orbital Velocities at Perihelion and Aphelion
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Is a Planet-Dissolving Chaos Cloud Really Headed Towards Earth?
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Why Does a Planet Rotate and What Factors Influence Its Angle of Rotation?
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What's the farthest distance a star visible to the naked eye can still be seen?
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Mapping 21cm Neutral Hydrogen with Radio Telescope
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