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.
New Gorgeous Video from Deep Impact
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Graduate Why don't galaxies move faster then c?
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Undergrad Will Uranus Ever Be Tidal-Locked to the Sun?
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Graduate Pioneer 10 and 11 anomylous acceleration
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Undergrad Question about Jupiter atmosphere
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High School Should we Makemake anything about the name?
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Graduate Merger of Neutron Stars and Black Holes
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Graduate How Does Quark-Gluon Plasma Influence Big-Bang Nucleosynthesis?
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Graduate 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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Graduate The Blackhole Paradox: Can EM Radiation Escape?
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Stargazing Telescope Advice: 6" vs 8" Dobsonian
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Graduate What Is an Unambiguous Standard for Pulsar Periods?
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Graduate Is Spacetime a Tangible Entity or Just a Relational Concept in Physics?
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High School 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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High School Energy carried by the bulk motion of matter
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Undergrad Earth-Moon Barycentre: Movement & Effects
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Undergrad At what altitude and velocity is an orbit geosynchronous?
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Undergrad Why Do Objects in Space Spiral Around Larger Masses?
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High School Why Does Thrust Differ for Objects of Different Mass in Space?
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Undergrad Unanswered phenomenon in earth orbit
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Graduate How to measure the tangential component of velocity of receding starsor quasars?
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Undergrad Is IK Pegasi (HR 8210) dangerous to us at all?
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High School The Mysteries of the Universe: A Parent's Guide
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Undergrad A Look at the Naming of Exoplanets
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Graduate Determining the Argument of the Perihelion of the Earth: Which Value is Correct?
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Graduate Deriving the Chandrasekhar Limit on a Napkin
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High School Is the Moon Really Bigger on the Horizon? A Closer Look at the Optical Illusion
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Graduate Astronomical influence on climate
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Undergrad Absorb all sort of matter and radiations and still not releasing out?
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Water Found on Mars: Now to Melt It
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Graduate Keplers Equation: Finding Eccentric Anomaly E
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Is it possible to get someone's Myspace email?
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Graduate Atmospheric Gamma Ray Interactions
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Undergrad Giant Asteroid Flattened Half of Mars, Studies Suggest
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High School Latest Martian Ice News: Scientists Investigate Water Ice on Red Planet
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Graduate Supernovae of Procyon & Capella Systems
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Undergrad Perihelion Pass Dates for Planets - Alex's JS Orrery
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What are your thoughts about the Large Hadron Collider?
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Mars - this is how it went down. (just for fun/argument sake)
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Graduate Kustaanheimo-Stiefel transformation ?
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Graduate Twins stars born at different time
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Mars Soil Has Nutrients Capable of Supporting Life
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High School Are All Planets Rotating in the Same Direction, Except Venus and Uranus?
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High School Read in a book that fall in a bh is the sameto go at c
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Graduate Surface brightness profiles: sech^2 fit in mag/arcsec^2 units?
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Temperature of the surface of a satellite?
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Commercial Spaceflight: When Will it be Accessible?
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  • Poll Poll
Can mankind transcend the fabric of space and time?
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Graduate How Does the Sudbury Neutrino Observatory Confirm Neutrino Interactions?
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Sky Cut Meaning: Definition & Explanation
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Undergrad Type1a supernovae as evidence for an accelerating universe
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Graduate Reconstruction Primordial Fluctuations from Temperature Anisotropy
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Is this Hanny's Voorwerp or Kermit the Frog in space?
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High School Pluto belongs to a new category : plutoids
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Undergrad Can Newton's Law Be Expressed as F=G\rho\rho1\frac{}{} d^{}2?
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Undergrad Phoenix craft to dig under Mars ice (landing planned 25 May)
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Undergrad How Come Planets Don't Fall Into Stars?
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Undergrad Gravity Pull: Calculating Time to Impact
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High School Could ever Pluto slam into Neptune?
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Graduate Blackholes, Jets and Dark Matter.
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Drawing moon phases - what’s your opinion?
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Undergrad Calculating Semimajor Axis of Meteor Orbit
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Is the Tracking Error of the Telescopic Scope Mount a Dealbreaker?
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Undergrad Gravity and curvature in spacetime
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Graduate Einstein@Home search for periodic gravitational waves in LIGO S4 data
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Undergrad Light Bending and Mass: Understanding the Effects of Gravity on Light
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Undergrad Earth's rotational speed in the past.
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Graduate Animation/visualization of galactic rotation rates (dark matter)
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Graduate Why Can't Flows in Phase Space Cross?
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Graduate Empty universe except for three indentical planets
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High School Why do we experience seasons on Earth?
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Graduate Explore the Mysteries of Gamma-Ray Astronomy with NASA's GLAST Mission
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Graduate Is Light Attracted or Converted by Black Holes?
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Undergrad What Are Quasars? Explained by Hubble Telescope
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Graduate How to measure the tangential component of velocity of receding starsor quasars?
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Graduate Is gravity really a force in the expansion of the universe?
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Undergrad What if Mars Had Been Closer and Venus Farther?
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Graduate Gravity and coordinate acceleration
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Graduate Does anyone know how to read these diagrams?
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Graduate Calculate how mass creates a curvature in relativity
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Undergrad Solar Radiation AM - Danilo's Question
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Finding a Moon Spectrum Graphic: Can You Help?
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Undergrad Why Syrius in the past was a red star?
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Witness GLAST Launch: Now on Virtual Institute of Astroparticle Physics
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Graduate What do I use to determine rotational speed of solar nebula?
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High School Unveiling the Mysteries of Dust: Composition, Properties and More
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Night Sky Views from the Edge of a Distant Galaxy | Manuel's Perspective
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High School Is Our Solar System Really 2D in Planetary Rotation?
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Graduate Accumulation of Mass in Stellar Formation?
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GLAST scheduled for launch on 3 June
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Stargazing Discover the Wonders of the Night Sky with WorldWide Telescope
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Graduate Entanglement instead of inflation
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Graduate How Can Black Holes Form and Behave in Our Universe?
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Graduate Derivation of Escape Velocity Inconsistency
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Graduate There's more starlight than we thought (nearly twice as much)
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Did We Spot the International Space Station from Brockville, Ontario?
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Graduate What Are the Challenges and Proposed Solutions for Terraforming Mars?
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