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 Jumbled up spectra of stars/glaxies
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Graduate An article stating Cosmology is in crisis. Is it in crisis?
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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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Insights The Balloon Analogy .... the Good, the Bad, and the Ugly - Comments
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Graduate Quark Overproduction in the Big Rip Theory
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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 How do we know that the universe is three dimensional?
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Graduate Large amount of mercury in space
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Graduate The Big Bang & What's Not: 2016 Edge Essays
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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 Why does dark matter pool in the CMB plasma?
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Graduate Conservation of energy and space expansion
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Graduate Question reguarding the expanding universe
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Graduate Why is there no continuity on the temperature of the CMB?
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The Science Behind Children's Love for Cinnamon Toast Crunch
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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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Undergrad How E Folds relates to our universe
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Undergrad What is the energy in a cubic km of empty space?
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Graduate Searching for Dark Matter in 3.5 Kev Line Mystery
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Undergrad How Does Supernova Light Dimness Indicate Universal Acceleration?
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Graduate Another age problem in the early universe?
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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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High School Birth of the Earth: Big Bang, Dark Matter & More
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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 How could the infant universe have existed as a singularity?
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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 Relationship between energy, information and dark energy
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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 Distinction between observable and unobservable universe
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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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Undergrad Universe Expansion: Is it Possible Beyond Light Speed?
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Graduate How is time incorporated into the robertson walker metric?
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Graduate Expansion of the Universe and Thermodynamics
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Graduate Measuring space expansion without redshift
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Graduate How can an inflaton field maintain its energy while expanding without diluting?
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Undergrad Information on Dark Matter and Dark Energy
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Undergrad Can the Universe Expand Faster Than Light?
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Graduate Might Dark Energy have anything to do with Inflation?
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Graduate Proper distance integral limits seem wrong
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Undergrad Another math in another universe?
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Graduate Gravitational force of a neutron star
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Graduate Space Expanding Proportional to Distance
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Graduate Why does the universe have no net charge?
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Graduate New valuation of ΛCDM Cosmology by 41 authors....
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Graduate Size of Universe: Evidence of Finite Limits?
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Graduate How cosmologists determine universe flatness
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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 Proper distance problem/interpretation
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Graduate Could Dark Energy lead to a big bang?
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Graduate Explaining the Luminosity-Temperature Relationship for Stars on the Henyey Track
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Graduate Does accretion reduce the magnetic field of a neutron star?
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New Closest Earth-like Planet (20/12/15)
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Graduate Why is it that scientists think that dark matter annihilates
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Graduate Galaxy centre and rotation curve
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Graduate What does expand: Space or Spacetime?
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Graduate Cosmic Mystery: Was There Baryonic Matter During Radiation Domination?
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Graduate How are the effects of antimatter on gravity different?
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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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Graduate The unification of quantum theory and relativity theory
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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 Amount of dark Energy at different times
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Graduate Number density: Initial fluctuation strength and more....
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Graduate Regarding the relationship of mass, velocity, and time
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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 White Holes: Real or Hypothesis?
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Graduate Galactic density in the low-mid distances from core
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