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 !Evidence of Star Formation in Molecular Clouds
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Satellite Photo: Is It Plausible?
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Undergrad Jupiter's Atmosphere: Questions & Answers
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Stargazing Upgrade Telescopes: Get Into Astrophotography & Stargazing near LIGO
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Graduate Supernova 1987a, light, neutrinos, VSL claims
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Graduate New double pulsar testbed for GR and alts.
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Graduate Could Gravitational Lensing Confirm the Existence of Dark Matter?
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Graduate Gravity On Earth Dependant On Distance From Center
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Graduate How Do You See Spectral Lines in Near IR from the Sun?
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Graduate Tiny Blackholes may pervade space
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High School Pole Star Help: What Was the Pole Star 9-10,000 BC?
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Graduate Wet planets common (new simulation study by Raymond et al)
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High School What Defines a Planet?
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Undergrad Sedna must be a planet (at least for now) according to new definition?
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How Big is Earth Compared to the Sun?
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Earth Narrowly Escapes 2006 QM111 Asteroid Flyby
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Graduate Research Project Ideas - Taylor's Brainstorming
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The Astronomy Peer Review Process
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Interested in The Sky at Night webcasts?
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Will a Satellite Crash into the Moon Tonight?
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Graduate The Mystery of Ringed Planets: Uncovering the Cause
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Undergrad How close can planets safely exist from each other?
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High School Do All Planets Have Moons and How Did They Form?
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High School Is Space Just a Magnified Illusion of a Fluid Universe?
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Rare Astronomical Event Observed for the First Time
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High School Why Is Pluto No Longer Considered a Planet?
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High School Earth, Sun & Galaxies: Physics of Movement
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High School Mars Closest Encounter With Earth
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Graduate Investigating an Unknown Hypothesis on Gravity Unequality
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Undergrad Calculating Limiting Magnitude for 12-Inch Telescope: Tips and Advice
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Undergrad Now Its Official: Eight Planets (Pluto got bumped)
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Undergrad Brightness of Mars as observed from earth
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High School Stars Burning in Space: Unanswered Questions
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Undergrad The moon moves in a near-circular orbit around earth
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High School Measuring in Space: How Sensors Work in the Cosmos
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  • Poll Poll
Undergrad What Defines a Planet?
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Undergrad Rehash: speed of falling object at Earth's centre
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Call them DOLPHINS (not dwarf planets )
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High School Only earth orbits in a circular motion?
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High School What Truly Defines a Vacuum?
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Graduate Why Does Light Bend Around Massive Objects?
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High School What is the red circle near the moon phenomenon?
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Undergrad Doppler Effect and the Expanding Universe
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Graduate Drake Equation: Parameters, Missed Factors & Technical Limits
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Undergrad Just a question of planetary magnetism
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Graduate Does the bending of light by objects affect our view of the universe as a whole?
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High School Galaxy Splitting: Has it Ever Occurred?
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Graduate Black Holes & Light: Theory or Fact?
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Graduate Blackholes theory maybe incorrect?
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Rooting for Roaches in Space: Madagascar Hissing Roaches Thrive in Vacuum
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Stargazing Buying a telescope any suggestions?
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What Would Watching TV on the Moon or in Deep Space Look Like?
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Undergrad Phases of the Moon: Angular Separation Question
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Undergrad Final Year Project Ideas: Astronomy with a Celestron Telescope
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Graduate Binary Planemos Challenge Traditional Views on Planet and Star Formation
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Undergrad How Does Weight and Thrust Affect Rocket Acceleration and Velocity?
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Undergrad Celestron 11" Schmidt Cassegrain: Choosing the Right Model
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Graduate Definition of Volume Limited Sample for Sky Surveys
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Graduate Calculating Solar Core Radius Using Emden's Equation
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High School Are Stars Really Formed by Black Holes?
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Graduate How do we detect and study dark matter in our universe?
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Graduate Obscure Questions: Lagrange Points & Life Support
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Undergrad Unraveling the Mystery: X-Rays from Black Holes
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High School Imagine to be Pluto's surface, climate and atmosphere?
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Undergrad How quasars are related to black holes in galaxies?
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Graduate What Are the Secrets Behind Super Massive Black Holes?
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Undergrad Why do Spectroscopic Binaries Have Short Periods?
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High School South Delta Aquarid or Perseids?
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Searching for Visyar Bright Star Catalogue: Help Needed!
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Is Traveling Essential for Astronomers to Unlock the Universe's Secrets?
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Undergrad Sudden ceasing of energy generation
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What Are the Key Characteristics of a Spiral Tracer?
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Graduate How Deeply Can We See Into the Sun?
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Undergrad Fusion of Stars: Time Difference for 0.50 & 1.5 Msolar Stars
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Undergrad Gravity on the surface of the Moon
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Graduate How many M type stars equal the luminosity of one O type star?
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Undergrad If Mars had 25% more mass would its orbit be further or closer to the sun?
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Knowledge of Time in the Past: Astronomers' Observations
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High School What is the density of the Sun's surface?
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High School How do these triangular toothpick ion engines lift off the ground?
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Graduate What is the significance of singularity in black hole physics?
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Why Haven't We Returned to the Moon in Decades?
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Undergrad Does Juggling Follow Kepler's 2nd Law?
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Graduate Matter and space-time mutually exclusive?
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Undergrad Age of the sun in galactic years
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High School What Would Happen if We Tried to Pull the Moon Closer to Earth?
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Undergrad Anyone in san francisco willing to help?
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High School Reversal of Venus: Mystery of the Solar System
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Graduate Strangeness Nuggets to Strangeness Condensation
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Undergrad Experiments that modeled blackholes
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High School What Did Ancient Civilizations Discover About the Universe Before 3000 BC?
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High School Discovering the Mass of Earth: How Did Scientists First Calculate It?
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A couple of free books to download
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Graduate Cataclysmic Variables spin rates
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High School Did the Black Hole in Superman Returns Resemble a Type Ia Supernova?
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Graduate Hawking Radiation: Particles, Black Holes & Dark Matter
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Graduate Spawn of black hole thought experiment
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Hubble's camera goes into safe mode
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Graduate What is the cause of coronal loops?
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Graduate How Does a Tiny Dot's Mass Distort Space Time?
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