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 Do gravitational waves affect our measurements of weight?
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Is the Milky Way winding up or spinning out in space?
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Graduate Is there an event horizon beyond the visible universe?
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Undergrad Fictional Earthbound Asteroid Collision
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Graduate Derivation of the formula for cosmological redshift
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Undergrad Where there more planets being formed?
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Graduate What would Mars be like with 50% more density?
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Undergrad Black hole - frequencies used for viewing
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Undergrad Is a black hole a quasar or blazar?
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Graduate Lightlike radial null geodesic - how do we know it has constant theta and phi?
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High School Role of Neutrinos: What Are They and What Do They Do?
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High School What would happen to a bullet shot into space?
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Can someone identify what this is in the sky below the moon.
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Graduate Trying to understand the normalisation of the scale factor to be 1 today
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Graduate Pulling information out of a black hole
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How to convert my MXF files for importing into FCP X
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Graduate Sudden Earth Rotation Deceleration Theory
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Graduate How Does Order Arise from Disorder Despite the 2nd Law of Thermodynamics?
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Graduate Atmospheric Creation on the Moon
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High School Got doubts about Curiosity surviving Mars landing
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Graduate How thick is a black hole event horizon?
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Graduate New unbiased technique for the measure of the local dark matter density
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Graduate Super Structure - Evidence for Handedness Spiral Galaxies
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Graduate Black Hole Information Loss Question
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Graduate Can Gauss's Law Explain the Field of an Electron in a Closed Finite Universe?
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Graduate Is Dark Energy Present Everywhere in the Universe?
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High School Understanding the Moon's Phases: Debunking Common Misconceptions
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Undergrad Could a Hypernova Have Caused the Big Bang?
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High School When a star forms where does the Gravity come from?
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Undergrad Could there be a portal inside or near the sun?
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Graduate Antimatter decay rate in a book?
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Undergrad Can a planet/moon's atmosphere generate a magnetic field?
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Graduate Is Spacetime Linear? - The Universe in a Nutshell
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Graduate What Happens When a Magnetar Becomes a Black Hole?
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Graduate Is it Possible to Locate Earth's Future and Past Positions in the Starry Sky?
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Graduate The Big Bang: Radiation Era and Hydrogen Fusing to Helium
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Graduate Could Black Holes Lead to New Universes?
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Undergrad Why can't Light Escape Black Holes?
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Graduate Solar flares triggering seismic events
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Undergrad Center of the universe the origin of the big bang?
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Undergrad Could the Supernova Shock Wave That Created Our Solar System Still Be Detected?
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High School How strong is gravity in the center of the earth?
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Graduate How does light act leaving, traveling between, and entering galaxies?
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Undergrad The Universe is expanding, but why aren't we?
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What do you think of The Universe series?
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Graduate Berman's zero energy condition for universe
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Graduate Using iteration to orbit dual suns - losing energy
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Graduate Can New Galaxies Appear Due to Doppler Shift at High Speeds?
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Graduate Planck satellite, gravitational waves
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Graduate What does SR say about the expanding universe?
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High School Does Gravity Ever End and How Does It Affect Objects in Space?
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Graduate How can EVERY point in the universe be the center?
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Undergrad Is There a Formula for Calculating Star Altitude and Azimuth Over Time?
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Graduate Comprehensive Supernova Catalog: Redshift, DM, DM Err & Position Data
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Graduate Singularity in infinite space-time
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Graduate How exctly the higgs field originted after the big bang?
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Graduate How is the gain of a radio antenna at 230GHz calculated?
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Graduate Is the Multiverse Hypothesis Losing Steam in Scientific Circles?
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Undergrad Are Lawrence Krauss' theories accepted in physics academia?
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Graduate What is the scientific reasoning behind Inflation after the big bang?
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Graduate One planet, two suns, ellipse or hyperbola?
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Graduate Optimizing Orbits with Runge-Kutta-Nyström Method
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Graduate ESO sheds light on type II supernova
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Graduate Estimating Star Formation Rate in Plasma Clouds
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Mass, energy, gravity, space, time and math
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Undergrad Sun's Temperature: Is the Sun Charged?
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Graduate Polarized Light and Quantum Spin
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Graduate What Lies Beyond the Expanding Universe?
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Graduate Why should rotating black holes emit particles?
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Graduate Can We Detect an Ongoing Enlarging of Everything in the Universe?
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Undergrad Supernova that created our solar system
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Graduate Erosion of comet with Dark Matter.
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Graduate Where Did the Big Bang Occur?
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High School Could an ~12ft rocket launch some sort of probe into space
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Graduate Connecting two points in the Universe?
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Graduate What Are the Implications of Vacuum Fluctuations for the Big Bang Theory?
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Undergrad Is it possible I saw a luminous cosmic ray track?
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Graduate How Can We Quantify Homogeneity in Physical Systems?
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High School Why Can't We See Stars Beyond Earth?
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Graduate Is accelerated expansion creating energy
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Undergrad How Long Do Black Holes Last Before Vaporizing?
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Undergrad Pluto's New Moon and Potential Collision Risks for New Horizons Probe
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Graduate Big bangs & macroquantic - two questions
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Undergrad How Do You Calculate Angular Separation of Stars Using Different Coordinates?
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Graduate Can objects be redshifted to the point of becoming invisible?
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Undergrad How Does the Gravitational Force Equation Change with 1/r^3?
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RIP - Sally Ride - first American woman in space
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Graduate How Did the First Proton Emerge from the Big Bang?
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Excellent Exoplanet Illustration
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Graduate Does the number of galaxies change with time?
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High School Half of moon fluctuates in luminosity and hue randomly, why?
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Someone please explain this Sun Phenomenon
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Undergrad Is the Drake Equation Overestimating Intelligent Life in the Universe?
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Graduate Could a Star Collapse into a Quark Star Instead of a Black Hole?
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High School Looking further and further into the past?
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Graduate Fields permeating spacetime - aether?
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High School What Is the Diameter of the Observable Universe?
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Undergrad Does time move faster while measured from space or from earth?
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Graduate If the moon was vapourised, would it recondense or get blown away by solar wind?
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Stargazing How Do I Choose the Right Optical Lenses for Building a Telescope?
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