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.
Graduate Hubble Recession vs. Moon Recession
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Undergrad Is Dark Matter Invisible and Untouchable?
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High School Number of Kuiper Belt Objects Discovered - Find the Answer Here
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Undergrad Translational motion of stars & planets
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Undergrad What If Earth Suddenly Reversed Its Rotation or Changed Its Axis?
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Undergrad Ocean Tides, Earth's Rotation, Moon's Orbital Radius, & Global Warming
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Undergrad Deriving Distance Modulus: m - M = 5log(d/10)
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Undergrad Calculating the gravitational accelleration on the surface of a planet
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Undergrad Why is my computer not moving away from me in an expanding universe?
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Graduate What Causes Craters to Center Themselves on Other Craters?
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Graduate Are MECOs the Solution to Galactic Black Hole Mysteries?
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Graduate Do Black Holes Experience Inertia and Gravity?
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Fake Moon Landing: Evidence, Flags & Remnants | Part 1-3
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Who created this running difference image?
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High School Could Life Be Evolving in Galaxies 1.5 Million Light Years Away?
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High School Solar and Lunar exposure tables information
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Stargazing Have you seen the stunning night sky in New Mexico captured with a Canon 300D?
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Graduate Eclipsing binaries (references to data and models?)
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Graduate Does the expansion of the universe affect our observations in the real world?
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High School Where Can I Find a List of Stars in Gould's Belt?
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Graduate Gammaray Bursts (all you ever wanted to know)
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Graduate New map of the galaxy (Levine Blitz Heiles)
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Stargazing Meade DSI Pro II: First LRGB Photo of Whirlpool Galaxy
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Stargazing Recommend a telescope for a beginner?
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Graduate Structure of the Milkyway Spiral Redifined
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Graduate Gravitational collapse, star precipitation and black hole formation.
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Graduate Pioneer Anomaly & the Mystery of Dark Matter: A Closer Look
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Graduate Gammaray Sky animation (what GLAST will see)
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High School Terraforming Mars: Strange Ideas and Possibilities
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Graduate Can Deep Underground Astronomers Determine the Mysteries of the Universe?
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Graduate Alternative Solutions to Deflecting Asteroids or Comets From Earth
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Undergrad Can a Planet's Gravitational Force Prevent a Comet or Asteroid Collision?
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High School Does the Moon's Orbit Stay the Same?
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High School Realistic Meteor Impact Modelling: Is This YouTube Video Accurate?
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Graduate What is the Accreting Matter Paradox in Astrophysics?
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Voyager 2 Detects Odd Shape of Solar System's Edge
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Graduate Molecular Hydrogen at the Edge of Universe
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High School Extra-Galactic Stars: Are There Any?
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High School Why Won't Earth Fall into the Sun?
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Undergrad Mathematical discovery of planet neptune
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Graduate Age Difference in Earth Orbit Around Another Star
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High School Is Jupiter's Great Red Spot a gas giant phenomenon or a solid core mystery?
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High School Is there white hole in the universe?
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Comet Impact on Earth May 25th - Is It True?
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High School Why do Neutron Stars have a Magnetic Field?
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Undergrad What is the role of accretion discs in proving the existence of black holes?
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Undergrad Can Two Equal-Mass Planets Share a Satellite?
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High School Stoping the desturaction of the sun?
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What is the significance of the astronomical buckyball?
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Undergrad Does gravity explain all orbits in our solar system?
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High School My First Telescope Observation: Jupiter & 4 Moons
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What Secrets Do Titan's Dunes Hold for Dune-boarding Enthusiasts?
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Graduate Plasma Luminosity: Estimating Rocket Exhaust Heat Loss
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Undergrad Possible Explanations To Fermi's Paradox?
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Graduate ASCL.net - Astrophysics Source Code Library
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Graduate Escape velocity of a body from a black hole.
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Graduate Venusian Rotation: Retrograde & Axial Tilt 178° Explained
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High School Is Alpha Centauri, the closes star to the solar system?
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High School Earth's Rotation: Day & Year Cycles
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Graduate Are Trojans possible for other planets besides Jupiter?
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Graduate Finding Water on the Moon: A Proposal for an Experiment
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Stargazing What Can You Capture in the Night Sky with Jupiter, Saturn, and Comet Photos?
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Graduate Why is my paper very difficult to be published?
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  • Poll Poll
Undergrad Is a Manned Mission to Mars Beneficial for Scientific Advancement?
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Graduate Can We Understand Axis Tilts in Planetary Systems?
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Graduate Mars Mission: Challenges of Sending Humans to Mars
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Graduate Radio Waves emitted by Black Holes
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Undergrad Gravitational slingshotting
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High School Regular Flights to and from Moon: Would You See It?
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Graduate Do solar neutrinos really change flavor?
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Graduate Acceleration due to the solar wind
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Undergrad The Same Plane: Orbits & Galaxies in Our Solar System
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Stargazing Getting Started with Astrophotography: A Beginner's Guide
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Graduate Is a Methane-Molecule-Like Solar System Stable?
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Strike deathray from list of concerns?
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Undergrad Why does a star's gravitational force increase when it becomes a black hole?
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Undergrad Relation Between Areas of Astronomy
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Graduate Orbital Simulation: Estimating Mass from Orbit & Visual Observations
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Undergrad Drake equeation and planet finding
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Graduate Can the gas model theory explain recent satellite observations?
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Undergrad Someone want to have fun with asteroid simulation?
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Graduate Driving past your opponent in a space race
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Graduate Time after big bang we can observe, uncertainty principle
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Graduate Inverted Physics: Vacuum is Solid, Matter are Holes
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High School Discover the Fascinating Phenomenon of Northern Lights
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Undergrad Is Our Sun Part of a Binary Star System?
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High School Why does the universe look black?
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Undergrad Proving Pluto's Orbit Inside Neptune's - Maths Investigation
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Graduate Could a Wormhole and Black Holes be Used to Reverse the Big Bang?
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Graduate Occam's Razor and WMAP Anomalies
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Graduate Calculating apparent positions of sun and moon
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What planets were ancient people able to see in the sky without telescopes?
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Undergrad What distinguishes Pre-main-sequence stars from main sequence stars?
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High School Sun's Position in Our Solar System
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Graduate Do Celestial Objects Compete for Matter?
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Undergrad Distance between earth and moon increasing
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UK Moon Sighting: Was the Halo Real or Atmospheric?
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Stargazing Do astronomers at the 3,000 dollar level become degenerates
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High School What Is the Center in Sloan Digital Sky Survey?
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Undergrad Temp of a Comm Satellite in Orbit Around Earth
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