Astronomy and Astrophysics Forum

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Join in expert discussion on the topics of Astronomy and astrophysics. This may include discussion on celestial objects, space, and the physical universe as a whole. Mainstream science only.
Graduate Is the Sun Positively Charged?
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Undergrad How to calculate light intensity?
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Graduate Oribit integrator for a logarithmic potential
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High School Can You Help Discover New Planets with Kepler Data on Planet Hunters?
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Graduate Are black holes more redshifted than the CMB?
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Undergrad Could 0.9c neutron star jets originate from the core?
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High School "Gravitational Compression in Neutron Stars"
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Graduate Does the event horizon change as large objects approach it?
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High School How Do Orbits Work?
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High School Zig Zag Star Movement in Singapore 2011
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Undergrad Aerostat on Venus vs Surface Colony on Mars
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Graduate Stellar-mass black hole formation sequence
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Graduate X-ray bursts might not happen for larger neutron stars?
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Graduate Astronomical source extraction in non uniform background
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Undergrad Has Gravitational radiation been found
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Graduate How massive of an object would be be required....
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Graduate A possible super-Earth or Brown Dwarf in our Solar System
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Graduate Could Planet 9 have caused the gap between the heliopause and the Oort cloud?
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Undergrad Space Travel Physics: Realistic 2D Simulation
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Graduate The probable trajectory of the ninth planet in night sky?
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Undergrad Travelling at the speed of light
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Graduate What is the cause of variations in lunar eccentricity?
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Graduate Time evolution of density profile
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Undergrad Two stars with the same mass equals the same luminosity?
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Graduate Has information been lost to a black hole?
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Graduate Loss of stellar information in a black hole
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Graduate Naive Question about Dark Matter
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Graduate Possible Intermediate-Mass Black Hole in Milky Way Galaxy
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Graduate Understanding the phase-space representation of Ensembles
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Undergrad What Are the Unique Properties of a Black Dwarf?
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High School Can you tell the Physical Properties of a Messier Object?
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High School Can a Black hole also be a wormhole?
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Undergrad Venus' Synodic Year: Why Does It Take Longer Than Earth's?
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Graduate Is There Evidence for Redshift Drift in High-z Galaxies?
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Stargazing How to calculate the amount of light a telescope collects?
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Graduate Best Place to View Stars: North Pole
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Graduate How long would it take two planets to collide?
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Graduate How exactly is information for CO transitions found?
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Graduate Questions about the balloon analogy
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Stargazing Astrophotography -- Best Telescopes?
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Undergrad How fast to shoot a bullet for it to hit the moon?
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High School Rapid Formation of the Moon: Insights from Theia Impact
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Graduate How to stop a black hole forming?
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Graduate Jumbled up spectra of stars/glaxies
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Graduate Are Dual Supermassive Black Holes in Galaxies Rare and Insignificant?
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Is Global Warming Responsible for My Amazing Astrophotography?
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Graduate Gravity wave cancellation cause space expansion?
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Graduate What happens when a star and a black hole collide?
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Graduate Large amount of mercury in space
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Graduate Maximum velocity of a falling object at the event horizon?
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High School Light & Blackhole: Can Light Escape?
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Undergrad Why do pulsars emit electromagnetic waves from their poles?
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Graduate Time Dilation Definition: What is Time Dilation?
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High School What would happen if two stars collided?
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Undergrad How can I generate an elliptical orbit using only position and velocity data?
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High School Space X falcon 9. Why return to the launch site?
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Graduate Gravity around small black holes
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Undergrad Hubble Finds Origin of Huge Cloud Crashing into our Galaxy
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Graduate Is Dark Matter Consumption by Black Holes Equal in a Galaxy?
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Graduate Accelerating Expansion and Mediocrity Priniciple
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Undergrad Concerning SOHO's orbit, and its corrections.
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Undergrad Why can we not see auroras at lower latitudes?
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Undergrad What are the negligible forces in the solar system besides gravity?
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Graduate Stars in the early universe and stellar processes
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Anyone in Honolulu interested in astronomy, etc.?
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Graduate How can a black hole be infinitely small?
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Undergrad Spectra of Stars: Reliable Data & Quantitative Analysis
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Help My Extraterrestrial Friend Arrive to Madrid's New Year's Eve Party
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High School Into what is our universe expanding ?
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Graduate What are the key challenges facing aerospace tech for a manned Mars mission?
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Undergrad Geocentric model: how long was it taught in universities?
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Graduate Could accretion on a neutron star’s poles cause the jets?
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Graduate Gravitational force of a neutron star
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Undergrad Can gravitational waves cancel out?
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Graduate Shape of quark matter bubble in a magnetized neutron star
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Graduate Explaining the Luminosity-Temperature Relationship for Stars on the Henyey Track
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New Closest Earth-like Planet (20/12/15)
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Graduate Galaxy centre and rotation curve
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High School Why does space appear differently to different astronauts?
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Undergrad Black hole smaller than a neutron star?
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Undergrad Why Do Pluto and Charon Share the Same Diffraction Spike Orientation?
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Graduate Neutron Stars from White Dwarf Mergers: Under 1.4 SM?
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Undergrad What if there was a black hole in the middle of a nebula?
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Graduate Can We Engineer Our Own Stars to Prevent the Heat Death of the Universe?
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Undergrad Extraterrestrial Archaeological Expeditions?
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Undergrad Spectroscopy and the doppler effect
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Undergrad Trying to calculate Orbit figures with C# and 3D space
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Undergrad Quick question on orbital eccentricity and mechanical energy
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Undergrad Energy production of star given mass?
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Graduate Hawking radiation from not-a-black-hole?
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Graduate What's the most massive white dwarf in the MW?
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Graduate R136a defies Laws of Stellar Evolution
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Graduate Ptolemy's Theory of the Empty Focus of an Elliptical Orbit
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Graduate A. Pacholczyk: Radio Astrophysics (need a favor)
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Graduate Hubble Law and expanding universe
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Graduate Is T Pyxis a Real Threat to Earth?
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Graduate Galactic density in the low-mid distances from core
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Graduate Black Holes, Light & Photons: Mass & Speed
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Graduate Will VY Canis Majoris be the next massive star to go supernova?
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Astrophotography with New Sensor - Improved Alignment & Stabilization
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