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.
Center of the galaxy and the great attractor
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What evidence supports the big bang theory?
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Is what I saw - a meteor that was heading in my direction?
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Effects of a vacuum/ the expansion of the universe is accelerating
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Black Holes: Real or Not? Magnetic Poles & Jets Explained
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Stargazing Question about reflecting telescope design.
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Understanding Hubble's Constant: Debunking the Misconception of Its Name
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Ladies and Gentlemen Voyager 1 Has Left the Solar System
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Stargazing FOV for galilean vs keplerian telescope
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Which universities in Australia offer a PhD in Astronomy?
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Stargazing What Kind of Paint Is Used for Radio Telescopes?
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How Does Object Collision Work in Space?
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Is density of a material affected by gravity? If so
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Does Newton's Law of Gravitation Apply in Outer Space?
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Three privileged directions in the universe
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Why is the Moon's Gravity Uneven?
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Is time and space truly symmetric in light of Noether's theorem?
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What happens to heavy atoms that come into the atmosphere as cosmic
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Gravitational Capture: How Can Binary Stars Form?
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Sun moves north as it sets in wunderground video
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What is the connection between hurricanes, spiral galaxies, and sunflowers?
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Confusion about the accelerating expansion of the universe and Hubble
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Hippacros star catalogue - astrometric calculations
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Did a Giant Impact Start the Moon's Movement?
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Was the Bright Ball with Blue Light I Saw Through My Binoculars Saturn?
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Delta V as a Function of Altitude
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Are small extra space-time dimensions represented correctly?
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Are black holes bound to galactic revolution?
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Can u'g'r'i'z' filters be converted to ugriz filters?
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What Does Unusual Auroral Activity Mean in Astronomy?
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Question combining - black holes & conservation of angular momentum
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Colliding Black Holes & Einstein's Equations
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Is the Earth-Moon System a Double Planet or Planet and Satellite?
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Conservation of mass - Stellar equation
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Why do 1A Supernovas always explode at the same exact point?
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Blackhole temeperature and bigbang
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Is the moon orbiting the earth at the same speed that earth spins?
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Hydrostatic equilibrium of a cylindrical area
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Mars in Future: What's Ahead 1-3 Billion Years?
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Brown Dwarf more massive than stars?
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How have supernovae shaped the evolution of heavy elements in the Milky Way?
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This is how Atlantic wire scientific columnists roll
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State-space model of magnetically suspended ball
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What is Dispersion Measure and How is it Used in Astrophysics?
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Velocities in space relative to other objects
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How many parsecs is it when the redshift z=1
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How deep would you have to dig into Mars to reach Earth's gravity?
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Is the New Lunar Mascon Model the Key to Understanding Moon's Gravity Anomalies?
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Astronomical Archives: Finding Distances to Stars
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Rings & Tidal Locking: Formation Possibilities
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Animating Solar System Evolution from Real Physics Data
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Need axial tilt info of earth daily
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Earth-Moon Barycenter and Pro-Retrograde motions
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Getting Started with DS9: A Beginner's Guide
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After help understanding black drop effect
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At which distance can you see Saturn's ring with a naked eye?
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What can stellar kinematics tell us about the IMF?
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Can Atmosphere exist in Moon Craters?
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Why do stars appear to have different colors?
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Is It Possible to Destroy a Blackhole?
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What to study to be an astronomer
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Matter in a super condensed state?
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Universe is speeding up? Are we traveling with it? Dark Energy.
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What gives a Black Hole its tremendous gravity?
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What Caused the Bright Flash on the Moon on March 17, 2013?
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Debunking the Myth: Why Exposing to Vacuum of Space Won't Make You Explode
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Static Universe vs Expanding Universe
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Will the Moon Ever Escape Tidal Locking?
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  • Poll Poll
Would You Take a One-Way Trip to Mars?
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GALAXIES - what was 'extra' so visible matter was presumed missing?
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Is It Natural for the World to Have Zero Angular Momentum?
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Unraveling the Mystery of Dark Matter and Mass: Fact or Fiction?
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A few questions about using power laws
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Is the Universe able to evolve due to fundamental forces?
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Why are all the orbits elliptical and not circular?
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Why aren't black holes the brightest objects in the universe?
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Initial Conditions of Astrophysical Simulations in 3D
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Earth's axial tilt and the shadow from the Sun
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Functions for properties of stars and their planets
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Question about eddington luminosity
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Consequence of light pointing towards a blackhole
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Shooting images through window pane glass
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Mass Luminosity relation doesn't hold true when applied to actual data
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Super novae mechanics - how does it work?
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Why does everything in the Universe form a ball or Sphere?
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Does Dark Energy break the Conservation of Energy?
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What is the shape of a Black Hole?
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What happens to EM waves outside the universe?
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Does Distant Starlight Become Coherent Upon Reaching Earth?
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Exotic atoms hold clues to unsolved physics puzzle at the dawn of the
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What is the shape of the known universe?
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The most simple explanation for origination of spiral galaxies?
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Calculate LST: Uncover the Mystery of 100.46
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Example to make clear the difference between specific intensity and fl
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The Ecliptic and the Galactic Planes
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Black hole evaporation, where does it all go?
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Is the speed of light constant in a vacuum?
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Redshifts & Hubble: How Do We Know Galaxies are Moving?
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Can Black Holes Consume Light Without Increasing in Mass?
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How to measure the location of Gamma ray burst ?
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