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 What distance is used in Hubble's Law.
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High School Tidally Locked Planets: How Close to the Star?
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High School What Is the Lifespan of a Neutron Star?
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Undergrad Dark Era of the Universe: Is it Really Dark?
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Undergrad Does the Universe's Expansion lead to Critical Mass < 1?
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Undergrad What's Next for Astrogeology and Planetary Sciences?
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High School What Are Common Misunderstandings About the Big Bang Theory?
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Undergrad Universe from Nothing: Cosmological Theory Explained
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Stargazing Amateurs Discover Asteroid Impacting Jupiter
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Undergrad Could "dark matter" be regions where Lambda is lower?
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High School How Much Do Astronauts Age at Light Speed on a 50-Light-Year Journey?
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High School Why Does Free Space Permittivity Have Its Specific Value?
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High School Is the Earth the centre of the universe?
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Graduate Do Large Galaxies Exist Without Central Supermassive Black Holes?
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High School What would be the minimum size for a galaxy to have a disk form?
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Undergrad What happens to light when it reaches the edge of the universe?
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High School Planet/Dwarf Planet Classification - Regarding Rogue Bodies
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Undergrad Can Dark Matter just be vacuum fluctuations?
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Undergrad Thought experiment: Communication beyond the particle horizon
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Undergrad Calculated solar irradiation not matching up with measured
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High School Final Temperature of the Universe: Effects of Dark Energy and Spatial Curvature
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High School Could redshift be caused by time speeding up?
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High School Is Space Infinite? Examining the Big Bang Theory and the Curvature of Spacetime
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Undergrad "Dark energy" may be nothing more than baseline curvature
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High School How Did the God Particle Explode to Create Our Universe?
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Undergrad Hypersphere mock-ups for educational purposes
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High School Discover the Phenomenon of One New Star Every Hour: Science Daily"
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High School Why is the CMB relatively uniform?
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High School How was the KSN 2011d Supernova Detected?
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Undergrad Lift-off of ExoMars mission to find life on Red Planet
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Undergrad CMB Radiation Q: Can It Be Detected from 42 Million Light Years?
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Stargazing Diameter of Charles Messier's Telescope
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Undergrad Are almost all stars in the night sky brighter than the Sun?
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High School Effect of Density and Geometry on Gravity and Luminosity
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High School How come black holes have a mass?
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High School Why isn't water on the ISS dangerous?
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Undergrad Cosmology Large Angular Scale Surveyor
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Undergrad Dark Matter Detection Experiment Results?
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Undergrad Does The LCDM Model need reworking?
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Undergrad Direction of stars' orbits around galactic center
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High School Why Does LIGO Only Detect the Famous 'Chirp' Pulse from Black Hole Mergers?
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Undergrad Binary system of a neutron star with a black hole
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Graduate Solar drive / neutron atmosphere
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Graduate What is the solution to the black hole information paradox?
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Ceres' bright spots seen in striking new detail
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High School Challenge to humanity to see beyond and further than the CMS
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High School Pulsars and Neutron Stars debunked?
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Undergrad Asymmetric Tensor: Definition & Examples
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High School How does the cosmic background radiation help us measure expansion in cosmology?
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High School Gravity at the Core of the Sun: How Strong is it?
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Undergrad How to Convert Plummer Distribution of Stars Parameters into Standard Units?
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Undergrad Could Planets Have Dual Cores Similar to Cell Structures?
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Stargazing How to measure a magnifying glass (I want to build a telescope)
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High School How is the characteristic age of pulsars typically calculated?
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High School Is the Expansion Rate Truly Accelerating?
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Undergrad Dark energy and the gravitational constant
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Undergrad Detecting organic compounds in interstellar dust
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High School Orbit Likelihood: The Odds of Objects Falling into Stable Orbits Explained
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Undergrad Monopole Creation and Higgs Field
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Stargazing Calculating a Telescope's Limiting Magnitude
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High School Why not the sun revolves around the Earth?
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Undergrad Can Energy Naturally Convert to Matter in the Universe?
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Stargazing Setting up first telescope - need advice
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High School How Will Scott Kelly's Space Radiation Exposure Affect His Health?
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High School How Was the Binary Black Hole Collision Predicted?
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High School How far outward can we rule out intelligent life?
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Stargazing Receding Galaxies and the Range of Gravity
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High School Understanding the Flat Geometry and Curvature of the Universe
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Undergrad Is the following a smaller version of dark energy?
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High School Are Lunar Phases Affected by Earth's Orbit and Rotation?
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Undergrad How to calculate kinematic distances in the Milky Way
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Undergrad How to determine an asteroid survey efficiency?
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High School Black Holes and Degenerate Pressure
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Undergrad Current views on what happens at largest and smallest scales
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High School Trying to understand the Andromeda-Milky Way collision
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High School If the Earth stopped spinning? (orbiting the Sun)
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High School Does a Star's Fuel Running Out Lead to a Black Hole or Stellar Plasma?
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High School What do you see at the edge of the universe?
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High School Black Holes and Hawking radiation
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Graduate Can We Create a Magnetic Field on Mars through Moon Formation?
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Undergrad Rotation curve of galaxy Keplerian method
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Undergrad Extinct Curium 247 Found in Meteors
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High School Hubble breaks the distance record with a redshift of 11.1
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Undergrad Deriving the second Friedman equation from the first.
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Undergrad Early Earth: A Rapid Spin Through History
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Undergrad Plausibility of high density rocky planets
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Graduate How Do Black Holes Affect Time and the Fate of the Universe?
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High School Will super symmetry become part of cosmology
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Graduate Degeneracy pressure and stellar collapse
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Graduate Is Detecting Distant Asteroids/NEOs from the ISS Possible?
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High School Intergalactic Stars: Are There Single Stars Between Galaxies?
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High School How Far Back Can We See with Better Optics?
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Undergrad Directed panspermia mission to Mercury
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Undergrad Inconsistencies re Astronomical constants
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Undergrad Earth rotation different in hemisphere
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Graduate Having Trouble Plotting the Cosmic Shear Power Spectrum Kernel?
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Undergrad Dark Matter Halo & Newton's Shell Theorem
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High School Can an object have too little mass to have a stable orbit?
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Graduate What are the implications for dark matter searches and supersymmetry?
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High School Gravitational Radiation: Effects on Objects & Black Holes
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