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 DM Exclusion Plots: Investigating WIMP Mass & Cross Section Relations
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Undergrad How Can Kepler's Third Law Be Applied to Multi-Object Systems in Visual Python?
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Undergrad Unveiling the Mysteries of Dark Matter
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High School Term for the path of the subsolar point
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Graduate Are We Closer to Finding Elusive Gravitational Waves with New Search Methods?
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Graduate Does the mass of a blackhole remain the same if it is not feeding ?
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Graduate Meaning Of Permeability Of Free Space
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Undergrad Understanding Gravity & Orbit in Our Solar System
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Undergrad Nebulae, as seen from the inside
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Graduate Saturn's north pole hexagon vortex ring
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Graduate Spatial infinity and matter-energy density
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Graduate Initiating mechanism of supernovae
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Graduate Why does time stop in the event horizon of a blackhole?
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High School How the planets get their spherical shape
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Graduate Help me derive the relativistic equation of motion for the Universe
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Lenticular Galaxy - Formula for Probable Location of Stars
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Undergrad Trying to start a space club at university, help?
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Undergrad Atmospheric Extinction: How Deep Can 20/15 Vision See?
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Graduate Astrophysics in a quantum universe
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Undergrad Model to draw an absolute straight line
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High School Hubble Telescope: What's the Big Flap/Door?
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Graduate Is the Geometry of the Universe Determined by Its Density?
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Undergrad Tesla Coil Thruster: Could it be Possible?
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Graduate M67 Cluster Study: Books & Articles on Dynamics & Open Clusters
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Graduate Difference between micro black hole and primordial black hole
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Graduate Good reviews about dark matter candidates?
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Undergrad Slow roll inflation -layperson question
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Graduate The expansion of the universe, evidence of a 4th spatial dimension?
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Undergrad Is it possible for one celestial body to trail another indefinetly?
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High School Can someone explain thoroughly the celestial sphere
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Undergrad Question about Cosmic Background Radiation
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Undergrad How can space itself move/expand
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Graduate Will Dark Energy Eventually Dominate Dark Matter in the Expanding Universe?
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Graduate Gravity of Dark Matter - matters?
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Graduate Could 5-Dimensional Bubbles Explain the Big Bang?
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Graduate SN1a under fire as standard candles
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Undergrad How Many Unique Points Exist in a Region of Space?
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Graduate Could spacetime be a condensate?
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Graduate Contracting Confusion: black holes and event horizons
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Stargazing Which Telescope Under $1400 Offers the Best Planetary and Deep Space Viewing?
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Undergrad What is the scientifically accepted shape of the universe?
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Graduate An infinite universe with shape?
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Undergrad Age of the Universe and time duration
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Undergrad Big Bang Expansion: Is There A Centre Of The Universe?
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Undergrad No need for complications - Simple clear steps
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Undergrad Is there red shift evidence for light?
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High School Red shift of light from galaxies
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High School Is the total amount of water on the planet constant?
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Graduate Speed of Swallow of a Black Hole
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Graduate Why Was the Universe Smaller Than a Proton Pre-Big Bang?
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Graduate Does inflation theory have any confirmed predictions?
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Graduate What's really down in a BH? (a Planck star)
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Graduate Gravity & Virtual Particles: Does it Increase Temperature/Radiation?
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Graduate Galaxy separation faster than the speed of light
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Graduate Are Ionospheric Scramjets possible?
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Undergrad What is the equation of the orbits of things in space?
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Graduate Thermonuclear fusion in accretion disks?
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Undergrad Stellar Classification Limits: Temperature & Magnitude
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Undergrad When Will the Planets Align Again with Varying Year Lengths?
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Graduate Black hole similar to pre universe
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Graduate G Magnitude to V magnitude stars in a CCD
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Supernova in M82: Astrophotographers Wanted
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Graduate Alan Guth thought experiment about negative energy and gravity
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High School Oxygen Needed for Combustion Propulsion in Outer Space
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Graduate How Does Resonance Affect Satellite Orbits?
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Graduate Can you view objects that moved beyond the event horizon?
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Graduate Can Superconductors Shield Spacecraft from Cosmic Rays?
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Graduate What is the temperature of the CMBR?
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Graduate Is There an ISW Potential During the Matter Dominant Era?
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Graduate A Potential Test for Quantum Gravity: Analysis of Results from arXiv:1401.6562
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Graduate What Is the Next Step in Inflation Theory?
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Graduate How is the Big Bang producing singularity not a black hole?
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Graduate Usage of doppler effect to measure speed of a galaxy
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Graduate Why does geopotential not take into account the rotation of the Earth?
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Graduate Is Asymptotic Silence in Loop Quantum Cosmology the End of Time?
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High School Where Can I Find a Detailed Ecliptic Monitor for Tracking Solar Terms?
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Graduate Theories on Big Bang Expansion & Origin
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Graduate Is the LCDM Model in Trouble with the BigBOSS Project?
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Graduate Negative gravitational energy - negative energy gravitons?
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Graduate Is Spacetime Infinitely Elastic or Does it Have an Elastic Limit?
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Undergrad How we know the universe has a beginning
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Graduate Is there any evidence for universe still expanding?
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Graduate Much ado about nothing? Local void & LCDM
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Graduate Gravitational Lensing: Is He Right or Wrong?
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Graduate About completeness of the Friedmann equations
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Graduate Is there a reason to believe there is more matter than anti-matter ?
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Graduate Could Earth Capture a SECOND Satellite the size of the Moon?
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Graduate What is standard early inflationary cosmology?
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Graduate According to the inflation theory
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Graduate Big Freeze: Entropy or Dark Energy?
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Graduate How Does the Integral's Limit Affect the Dark Energy Density Equation?
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Graduate Shannon Entropy and Origins of the Universe
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Undergrad Could the universe be a giant spinning teacups ride?
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High School Is Kepler 22 Visible from Earth with a Telescope?
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High School Which Layers of the Sun Emit Visible Light, UV, IR, and X-rays?
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Graduate Hawking's new paper - no BH, no EH
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Graduate Proxima Centauri's Unprecedented Passage
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Graduate Temperature of CMBR compared to galaxies in general
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Graduate Anthropic Principle and Infinitely Minute Variations
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High School Northern And Southern Hemisphere Of The Unvierse
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