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.
Undergrad Why do stars exhibit red shift and blue shift in our universe?
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High School Sun's Companion Star: Nemesis Theory
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Graduate What Are Rosswog's Ideas on the GRB Mechanism?
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Undergrad How to Calculate a Parsec - Tips from Astronomers
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Graduate Why Does a(tau) Not Equal af in This Orbital Migration Equation?
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Graduate The Great Attractor - What Do We Know?
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Graduate "Mysterious "Chaos Cloud" Headed Toward Earth"
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Undergrad Evolving Earth: Solar System Environment Over Time
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High School How many places in the solar system have liquid water?
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Undergrad Are White Holes Real or Just a Theoretical Concept?
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Graduate The cycle of life? Fractal orbits and spin.
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Undergrad Neutron star: heaviest teaspoon of matter
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Graduate Understanding Strong & Weak Resonance
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Graduate Does Gravity Violate the Cosmo Speed Limit?
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Graduate Will the universe end in a Big Crunch or a Big Rip?
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Graduate How Does Black Hole Entropy Increase When Starting with a Pure State?
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Undergrad Interest in blackholes and whiteholes
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Stargazing Finding Equations for Sun's Eclipse Periodicity
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Undergrad Question about relation between galaxies
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High School How close is 18 Scorpii, the other solar twin?
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Graduate Astronomy Problems: Help Solve Now!
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Fell into the black hole that is myspace
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High School Speed of Objects in Space - Is It the Same as On Earth?
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Undergrad Likelyhood of Extraterrestrial Intelligence
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Undergrad Help finding an Aitoff projection of constellations
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Undergrad Orbit of almost 1 eccentricity
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High School The Earth, Moon and Sun's gavity game.
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Graduate The physics of dark matter & energy
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High School Is the Universe Larger and Denser Than We Imagine?
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High School Can a Moon Have Its Own Moon? Exploring Orbital Possibilities
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Undergrad Galactic Plane Crossings and Mass Extinctions: Is There a Connection?
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High School Is Seeing a Black Hole Possible?
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High School The moon doesn`t rotate around it`s axis.
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Undergrad Are Images of Space Distorted by Gravity?
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Graduate Redshift > 1.46 means Recessional Velocity over C?
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Undergrad Is the Vacuum Between Water Molecules the Same as Cosmic Space?
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Graduate Planetary retention of atmospheres
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Graduate What is the highest redshift object ever observed in the universe?
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Graduate First stars now thought to be 400 MLY after BB?
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Undergrad Vernal Equinox: Understanding the Yearly Variation
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Undergrad Do Other Planets Have Radiation Belts Like Earth?
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Graduate Is the Quasar in NGC 7319 Really Inside the Galaxy?
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Undergrad Characteristics of globular clusters
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Shoreline on Saturn's Moon Titan - Yahoo News
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Graduate Compute Tidal Locking Radius: Planet/Moon Area
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Graduate Universal Regeneration: Is Expansion Recycled?
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Progress for Humanity: Examining the Cost of Experiments
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Graduate New WMAP Data: Check Out Figures 20 & 21 on Pages 48 & 49
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Undergrad Life on Europa? Complex or Simple?
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Graduate Nuclear reactions in AGN accretion disk
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High School Farthest Visible Star: Distance & Observation
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Graduate Is Anything Ever Truly Stationary? A Theoretical Exploration
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Undergrad Do All Spiral Galaxies Rotate in the Same Direction from Earth's Perspective?
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Graduate What is the Anomaly with Sirius B's Data in Astrophysics Calculations?
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High School What is the difference between a nova and a super nova?
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High School How Can I Determine Current Planetary Velocities?
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High School The most intnse solar strom in 50 years
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Undergrad Galactic Frequencies: Info on Frequency of Galaxies
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Graduate Tully-Fisher, fundamental plane - what about LSBs, dwarfs, etc?
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Question for astronomers, astrphys.
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Graduate The Search for the Perfect Solar Twin: HD 98618
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Graduate The view from a ring singularity?
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Undergrad Why are Globular Clusters so Metal poor?
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Graduate Big Bang: EXPLOSION OF A SUPER MASSIVE B.H
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Undergrad Galactic Merger: What Will Happen When Andromeda Collides with the Milky Way?
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High School What made the scientists to think about Antimatter
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Water found somewhere beyond Earth
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Graduate Calculating Bolometric Correction for Cepheid Variables
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Graduate Population III detected at last?
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Graduate Watch out, n00b about Black Holes Question.
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High School Are cosmic rays considered part of the EMS?
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What is the Symbol for "Section"?
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Undergrad Light in Astronomy - Properties & Uses in Observing Objects
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Graduate Stephan's Quintet: Spitzer Telescope Views Galaxy Cluster Shock Wave
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Undergrad Solar celestial position (as function of latt, long, time of day, date, )
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Undergrad How to Calculate the Angle Between Two Celestial Objects?
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Graduate Time Dilation and Black Hole Inflation
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When Were Stars Discovered and How Are They Catalogued?
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What are some resources for obtaining Mercator projections of Mars?
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High School Mission To Pluto Uses Jupiter To Speed Up?
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High School Hubble discovers two new satellites of Pluto
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Graduate Major Access = Averate Distance over Eccentric Anomaly
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Undergrad What is a Plummer Sphere Exactly?
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Undergrad Questions of a Newbie: Iron Cores in Stars and Planets
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High School Lightening on Mars? - Does Mars Have "Dusty Thunderstorms"?
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Stargazing Can I Take Photos of Saturn and Galaxies with My Meade ETX70 Telescope?
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Graduate Measuring Vorticity in a Rotating Anisotropic Universe
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Undergrad Computer Science in Astronomy: Essential Skills and Applications?
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Major Scientific Discovery - Extrasolar planet announcement 25 Jan 18:00 GMT
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High School Why Do Hubble Photos Have Black Squares?
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What's the Latest on Space Elevators?
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Undergrad Venus Synodic Period: Why 72 Degrees Away?
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Graduate Some questions on star evolution
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Astro Phys: Bridging the Gap Between the Man in the Street & Astronomy
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Astrophysical Experiments Under Threat: Funding Cuts Ahead?
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Graduate Why Do Different Planetary Simulation Softwares Show Discrepancies?
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Graduate What happens when two black holes collide?
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Graduate Interstellar Travel: Theorical Force to Stabilize Wormhole
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Graduate Could Gamma Radiation Bursts Be Evidence of Superluminal Travel?
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Graduate Can planetoids repair complete fractures?
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