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.
Undergrad How much number crunching is necessary in some simulations?
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Graduate What Are the Future Strategies for Space Exploration and Colonization?
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Graduate Before the Big Bang - New videos - Cambridge university
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High School Do Black Holes Exist? Maths & Singularity Explained
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High School How Large Is the Entire Universe?
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Undergrad Nuclear batteries on space probes
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High School Does Modern Astronomy have a problem?
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High School Why is the asteroid belt located between Mars and Jupiter?
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High School How does LIGO measure gravitational waves
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Undergrad Center of Image - Brightness Distribution
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Undergrad Difference between oscillatory/cyclic model and big bounce?
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Undergrad Dark Matter Simulation in Today's APOD
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Undergrad Equilibrium of Universe: Earth vs. Black Hole
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High School Calculating Average Time for Travel Using Acceleration and Velocity
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Stargazing Stunning Telescope Photo of Vega Captured with 130mm Eyepiece - See the Beauty!
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Undergrad Enforcing artificial frozen orbit
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High School Where Did All the Matter in the Universe Come From?
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Graduate Why Are These Accretion Disk Concepts Challenging?
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Undergrad Angular momentum of the Universe
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Undergrad Is there a stellar type that would make Firefly possible?
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Stargazing Mysterious Evening Sky in Ireland - Solve the Mystery!
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Undergrad Cosmological constant problem, interesting solution?
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High School Should we search for non-biological "life"?
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High School Apparent magnitude / absolute magnitude / luminosity
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Undergrad Is there an alternative theory to dark matter?
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Undergrad How to determine if an asteroid will burn up or hit Earth?
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High School How Would an Extra Planet Behind the Sun Affect Earth's Gravity?
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High School Wobbling galaxies: New evidence for dark matter
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Undergrad Instability of the Solar System
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Undergrad What is the difference between phase space and state-space?
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Undergrad Source of Heavier than Iron Nucleosynthesis
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Stargazing Is Binning the Key to Reducing Noise in Astrophotography?
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High School How Do Electromagnetic Stellar Gravity Waves Simulate Sound at LIGO?
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Stargazing Telescope Guiding Techniques: Improving Exposure Times through Auto Guiding
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High School Does a gravitational wave change the speed of light?
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High School Telescope and Stopwatch for the Mass of a Planet
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Undergrad Is the Three-Dimensional Universe Explained by Knot Theory?
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Undergrad Vibrations of astronomical bodies
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High School We could lose electricity and satellites due to solar flares
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Undergrad Can a supernova produce multiple stars?
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Stargazing What will be the outcome of the NGC4993 neutron remnant collision?
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Insights Getting Started with Solar System Imaging - Comments
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Undergrad Number of galaxies in the Universe
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Graduate Does gravitational collapse limit Neutron Star size?
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Undergrad Is Inflation unlikely or likely?
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Undergrad Is it possible to have a black star?
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High School Is the Edge of the Universe Defined by the Cosmic Microwave Background?
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Undergrad The Expanding Universe: A Scientist's Perspective on Infinite vs Finite Space
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Undergrad LIGO: How to Know Wave Direction?
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Undergrad Why does Hubble sphere expand with time?
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Undergrad Heavy elements from neutron star collisions?
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Undergrad Electromagnetism in the Lithosphere and Ionosphere
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Undergrad Neutron star merge why didn't all EM radiation came at once?
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Undergrad Understanding the 2nd Term of the Friedmann Equation: Replacing U with -kc^2
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Undergrad Why is the Matter+Lambda Universe Equation Equal to 1-Ω?
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High School The star's core cannot withstand its own gravitational force?
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Graduate Quantum fluctuations of the metastable false vacuum
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Undergrad Moving through space vs sitting in an expanding space
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Graduate Is gravitational constant unchanging over age of universe?
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Undergrad Dark Energy and the Cyclic Universe?
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High School Dark matter and SMBH orbital decay
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Undergrad How does the solar wind affect power grids?
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High School Explain Dark Matter: Verlinde's Theory Tested
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High School What is dark energy in the fabric of space-time?
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Undergrad What Are the Leading Theories Explaining Dark Matter?
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High School They found some missing mass, Hideki Tanimura Institute of S
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High School Ring Found Around Pluto Neighbor Haumea
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Undergrad Dark Matter Disc Evidence: New Possibilities in Milky Way Galaxy
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High School The Factors affecting the Orbitals of a moon
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Undergrad Actual number of stars in the Milky Way
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Stargazing What's the Best Telescope for Astrophotography Under $1,500?
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Graduate Are period 5 elements common in most stars?
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Undergrad Methods of Hawking radiation generation
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Undergrad Galaxy Rotation Curves and Mass Discrepancy
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Stargazing Focussing a Pentax K S2 with Live View for Moon Photography
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Undergrad Where Does the Cosmic Microwave Background Come From and How is it Measured?
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Undergrad Tight grouping of exoplanets 295RA 45dec
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Stargazing Looking for a beginner's telescope....
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Stargazing What was the reaction to the Hubble telescope's pictures?
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Undergrad Is the Sun considered a dwarf star?
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High School Ball Lightning and Stars: Unveiling the Spectral Similarities
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Undergrad Electric Dipole Moments: Sun, Earth, Planets, Minor Planets, Moons
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Undergrad Dark Energy Not Constant: New Claims
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High School Quantised Inertia: A Solution to Dark Matter and Galaxy Rotations
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High School Time Lapse of Supernova SN1987A - 30 Years in Under a Minute
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High School High School video project: What is Gravitational Lensing?
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High School Astronomers' Opinion on Wow! Signal: Evidence of ET?
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Undergrad How to deal with the celestial meridian?
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Undergrad Dark Matter Size to be seen in our solar system
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High School What is difference between platenary core, mantle & crust?
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Undergrad Can anyone help with this satellite question?
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High School We have kittens in orbit around Saturn
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High School Where Can I Find the RA and Dec of the V1 Star?
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High School Black holes in the centres of galaxies
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Cassini's Grand Finale - Fascinating New Insight
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Stargazing How Does Gravitational Lensing Work?
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High School What are the mystery lights in the sky and how can you identify them?
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High School Does the Singularity Really Exist Beyond the Standard Model?
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High School A terrestrial, temperate planet around Proxima Centauri
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Undergrad What spatial scales does dark matter become significant?
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