Astronomy, Astrophysics, Cosmology Forum

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Join in expert discussion on the topics of Astronomy, astrophysics and cosmology. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
Graduate The Mysteries of the Cosmos: Uncovering the Hidden Truths and Purpose"
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Graduate Relative peculiar velocity of MBR vs that of neutrino background
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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 20 trillion solarmass hot cloud going 750 clicks
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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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Dark matter, dark energy & gravity
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Fake Moon Landing: Evidence, Flags & Remnants | Part 1-3
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Graduate Is the Universe Beyond Our Perception?
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Graduate Help stamp out travel-time distance
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Who created this running difference image?
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Graduate Starkman tinkers with MOG (relativistic MOND)
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Graduate Terminal Velocity: Speed Beyond the Universe
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What existed before the big bang?
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Undergrad Is the Big Bang Like a Ripple in a Pond?
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Graduate Was the Big Bang a Black Hole Explosion?
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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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Graduate Is Causality Fundamental in the Universe?
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High School Where Can I Find a List of Stars in Gould's Belt?
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Graduate MOND gravity, an explanation please.
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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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High School Is the Universe Expanding and What Does This Mean for the Future?
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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 What Effect Does Cosmological Expansion Have on Solar System Mass?
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Undergrad Redshifts, what frequencies are they looking at?
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Graduate Structure of the Milkyway Spiral Redifined
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Graduate Photon frequency loss over time?
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Graduate Gravitational collapse, star precipitation and black hole formation.
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Is the universe examining itself?
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Graduate What Density of Radiation Triggers Gravitational Clumping and Black Holes?
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Graduate Pioneer Anomaly & the Mystery of Dark Matter: A Closer Look
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Graduate How does the cosmic microwave background (CMB) define a cosmological frame?
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Undergrad Electromagnetic waves and dak matter
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Graduate The Virial theorem and Cosmology
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Graduate Gammaray Sky animation (what GLAST will see)
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Graduate How could the universe possibly expand?
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High School What Are Color Shifts Like Redshift in Science?
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Graduate Why logic and reason fail when we try to trace back the origin of universe
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High School Terraforming Mars: Strange Ideas and Possibilities
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Graduate Cosmology-Particle Physics connection (Mark Trodden)
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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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Graduate Does the Hubble Constant Variation Over Time Affect the d/R = v/c Equation?
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Undergrad Can the Mass of Cosmic Rays in the Universe Be Calculated?
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High School Why Won't Earth Fall into the Sun?
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Graduate How to probe the homogeneity of the universe ?
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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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Graduate How do you interpret the Robertson-Walker metric
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Graduate CMB vs Neutrino BG: Why Does Neutrino Transparency Occur First?
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Undergrad What Could We See If We Observed the Big Bang with a Powerful Telescope?
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Behind the border off the universe
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Graduate Behind the border off the universe
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Graduate Could Changing Gravitational Constant Explain Hubble's Law Alternatives?
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Graduate What Are the Leading Theories on Dark Energy?
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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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Graduate Evolution of the Observable Universe
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What is the significance of the astronomical buckyball?
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Graduate Why do we live in a Friedmann universe?
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Undergrad Does gravity explain all orbits in our solar system?
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Graduate Rates of galactic evolution (first 3 billion years)
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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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Graduate How do we know that the expansion of the universe is radially symmetric?
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Graduate Expanding Universe: Metaphysics & Consciousness
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Graduate The Issue of the Beginning (new paper by Ashtekar)
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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 Requesting help on diagramming the universe
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Graduate Astonishing Coincidence: Age of Universe in $\Lambda$CDM & Milne Cosmologies
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Graduate Escape velocity of a body from a black hole.
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Graduate Is the universe a 3D manifold living in 4D space?
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Undergrad Origins of Universe: Chaos & The Big Bang
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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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High School Is the Universe Really Spherical? And What Lies Beyond?
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Graduate 'Cyclic universe' can explain cosmological constant
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