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.
Is Pi a Rational Number in Discrete Space?
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Gravitational acceleration for a rotating torus
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Could CMB Mass Reveal Insights About Dark Matter?
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Measuring astronomical distances
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What is centimeter continuum emission?
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What type of camera is needed for solar corona photography?
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Is it known what dark matter is?
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White Hole Postulation: Can it Exist?
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We in the Center: Why Are We at the Universe's Center?
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Black Holes and Galaxy formation
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Find the spectra of most elements on line?
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Basic Question about angle of inclination of a circle
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Stargazing Light Source for Point source fibers - telescope
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Dark Matter Exists: Evidence from Colliding Clusters
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Black Holes & Wormholes - What Happens?
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Signal to the end of the universe
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Tides are influenced by the moon
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A way to see dark matter annihilation (Pamela: cosmic positrons/antiprotons)
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Can sound waves reveal the history of dark energy in galaxies?
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Gunn-Peterson effect and the Lyman-alpha forest
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What is the newest theory on the missing mass?
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What Do Hard and Soft Spectrums Really Mean?
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Basic question about sun's mass & orbit of planets
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Rotations of Earth and other Rigid Bodies
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Moon's & Sun's Diameters During Solar Eclipse
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Hubble+/- 4.3%, is the constant constant ?
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What Happens If You Travel Beyond the Edge of the Universe?
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Gravitation Force on the Earth's Centre
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Why cant u go to outer space like an upwards climbing roller coaster?
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Orbit in space (extrasolar planets)
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Hubble ultra deep field - beyond the big bang
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Favorite books to read on subjects ranging from Astronomy
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How does the movement of stars compare to the movement of planets
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Pliers, pulsars and extreme physics
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Why Don't Galaxy Rotations Follow Kepler's Third Law?
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What Makes Our Solar System Special?
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Spin angular momentum of black hole
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What Defines Safe Orbital Distances for Planetary Bodies?
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Light Waves at Edge of Universe Question
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Slower rotation curves at centre
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How is the Velocity of Ejection Related to Quasar Redshift?
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What causes space time to come into existence?
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How constant are constants? - ice skating
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Matter in space create red shift
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Stargazing Calc Eclipse Any Loc: What Softwares Do?
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Best Telescope: Refractor vs Reflector
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Can Our Universe Be in an Infinite Loop?
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Determining Sun-Earth Distance: Parallax vs. Kepler's Law
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Radius of a star as a function of wavelength
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Why Does Blue Light Travel Faster Than Red in the Milky Way?
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Black holes responsible for missing ET?
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Stargazing Help get my telescope functional?
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What Eye Pieces Work Best for Beginners with a Meade DS114 Telescope?
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Photometry of SDSS Data: A How-To Guide
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Why Does the Equation for a Star's Central Pressure Become Singular at r=0?
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Can the Hubble Telescope Detect Life on Distant Planets?
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Stargazing Is It Safe to Watch a Sunset Eclipse?
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Can Black Holes Create Baby Universes?
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Can dark matter be just a cloud of protons?
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Scientists Discover Liquid on Saturn's Moon Titan
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Accelerometer xyz anlges to ra/dec
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Is the Universe's Expansion Due to Mass Loss or a Repulsive Force?
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Scientists find the trigger of the Northern Lights
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What Would Happen if the Sun Was Blue?
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JPL Website Wrong: Venus & Uranus Rotate Opposite
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What Determines Earth's Yearly Cycle?
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Real Pictures from Space: Are We Seeing Authentic Light Waves?
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Accelerating Universe and the Loss of Mass
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Can We Find Fossilized Remains on Mars?
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What is the Current Position of Planets in the Solar System?
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How much do we know about gravity?
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Urban Stargazing in Orange County - Is it Possible?
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Traversing the milky way galaxy when?
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What is the relationship between velocity and distance in a stable orbit?
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Stargazing Looked through an observatory telescope for the first time today
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New Gorgeous Video from Deep Impact
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Why don't galaxies move faster then c?
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Will Uranus Ever Be Tidal-Locked to the Sun?
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Pioneer 10 and 11 anomylous acceleration
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Question about Jupiter atmosphere
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Should we Makemake anything about the name?
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Merger of Neutron Stars and Black Holes
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How Does Quark-Gluon Plasma Influence Big-Bang Nucleosynthesis?
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Why the excess of young stars close to Milky's supermassive BH?
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Binary Star System Data - Get Answers Here!
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The Blackhole Paradox: Can EM Radiation Escape?
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Stargazing Telescope Advice: 6" vs 8" Dobsonian
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What Is an Unambiguous Standard for Pulsar Periods?
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Is Spacetime a Tangible Entity or Just a Relational Concept in Physics?
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Why is a space probe spinning around its own axes, when flying through space?
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Stargazing Building a telescope ( from another one )
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Is black hole a racially insensitive term?
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Energy carried by the bulk motion of matter
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Earth-Moon Barycentre: Movement & Effects
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At what altitude and velocity is an orbit geosynchronous?
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Why Do Objects in Space Spiral Around Larger Masses?
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Why Does Thrust Differ for Objects of Different Mass in Space?
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Unanswered phenomenon in earth orbit
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How to measure the tangential component of velocity of receding starsor quasars?
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Is IK Pegasi (HR 8210) dangerous to us at all?
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