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.
High School Is there a way to prove that men have gone to the moon
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High School Understanding Black Body Radiation and the Sun's Color Temperature
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Stargazing Stunning 2017 Eclipse Photos of the Corona Chromosphere
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High School The Most Primitive Star-Forming Galaxy Ever Found
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Undergrad Expanding universe and quantum wavefunctions
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Stargazing Child-like pleasure in seeing ISS and detached Dragon capsule
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High School Could we shade the Earth from the Sun to save Earth?
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Undergrad Did Phase Transitions Drive Inflation in the Early Universe?
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Undergrad T-symmetry and WDWE with regards to a Universe from Nothing
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High School How does the earth's magnetic field stop radiation?
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Undergrad What is the best source for COBE/WMAP/PLANCK mission data on the early universe?
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High School Miscellaneous Trivia: Planets and Moons
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Graduate Galaxy dynamics explained without DM or MOND
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High School Can Optical Interferometers Extend Beyond 1 Light Second in Length?
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Graduate Press Schechter function -- the variance on mass scale
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High School Collision of Stars: How Often & How Many?
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High School What do you think of the new names for features on Pluto
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Stargazing Worth it to buy 2" eyepieces for Newtonian telescope?
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High School Pale Blue Dot Project: Img. Earth-Like Planet w/ 18" Mirror?
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Stargazing Yet another Wall Street Journal article about space debris
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Undergrad Questions about planetary magnetic fields
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Undergrad Event Horizon and the Mass of a Black Hole
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Undergrad What causes pressure in White Dwarfs and Neutron Stars?
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Graduate Is the Parenago Discontinuity a real thing?
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Undergrad Safe distance from a neutron star
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Undergrad Meaning of permeability in free space
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Undergrad Dark matter/energy, why must it be there?
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Undergrad Is the speed of gravitational waves non- dispersive?
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Undergrad Why are the planets revolving around their own axis?
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High School Does gravity self interact with itself
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Undergrad Rainbows on Tatooine: A Binary Star System Mystery
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High School Does this paper disprove the possibility of a new universe creation?
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Stargazing Aurora Alert for 6th and 7th Sept
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High School Does the Expansion of the Universe Affect Gravity?
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High School Expansion Propagation: Finite Seed vs Everywhere?
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Undergrad Virial Theorem and the Ergodic hypothesis
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High School How can the Big Bang model apply to the entire universe?
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Undergrad Comparison of tidal forces acting on the Moon vs Enceladus
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High School Uranus's Moon Cressida is Doomed
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Stargazing Sunspots visible for 2 Sept 2017
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High School Why does the Moon sometimes seem red?
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High School What Theories Explain the Nature and Changes of Space?
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High School See Asteroid Florence Tonight in Frankfurt Germany
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Undergrad Understanding the Role of a(t)*dr in Calculating Actual Distance
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Undergrad Ammonia in icy moons of gas giants
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High School Big Bang theory and the known universe
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Undergrad Models of accretion disc emissions contradicted by experiment
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High School What is the age of the universe relative to?
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High School A Hypothesis To Observe The Formation Of Earth
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High School Did the big bang create something from nothing?
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High School Is Our Observable Universe the Actual Size of Our Universe?
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High School Most detailed picture of Antares
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High School What factors determine the timing of a solar eclipse?
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High School Asteroid Florence will soon pass Earth
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Stargazing The Sun today - 9 July 2017 - nice spot group
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High School Why Didn't the Earth Go Dark During Today's Solar Eclipse?
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Stargazing 'losing light' 1.25" DSLR coupling vs 2"?
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Graduate Definition of [itex]\sigma_8[/itex]
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Undergrad Why not detect dark matter in our own galaxy?
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Stargazing 2 significant spot groups currently visible
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High School Are Gravitational Waves accepted?
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High School Is it possible to see sunspots with the unaided eye?
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High School If spacetime can be bent can it be broken?
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Undergrad Galaxy Rotation Curves: Newton's Shell Theorem Impact
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Undergrad Observable Universe Size in Different Perspectives
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Stargazing Cloud of Moving Stars: Astronomy Phenomenon I Just Saw
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Stargazing Solar Con? Eclipse road trip to Makanda Illinois
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Undergrad Eclipse Path Explained: Earth's Axis & Moon's Incline
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High School Age of the universe: observable or entire universe?
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Stargazing Protecting Optics (not eyes) During Solar Observing
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Undergrad Hawking radiation from de Sitter horizon
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High School What if we weren't the only Big Bang
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High School Capture in a 2-body system (not)
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Stargazing Welding glasses safe to view eclipse with?
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Undergrad How to model Solar System formation accurately and realistically
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High School Question about the shape of the Universe
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Graduate GADGET2 Simulations: Fixing N-GenIC Error
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High School Goldilocks zones of other parameters
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Undergrad Influence of Dark Energy and curvature in photon-baryon fluid?
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High School A thought on the expansion of the Universe
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Undergrad How fast is the Universe expanding?
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Stargazing Different Simultaneity for telescopes in space and earth?
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Undergrad Mysterious Agent Blows Up Moon: Can Earth Survive?
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Undergrad Why isn't the Planck-scale limit taken as a postulate?
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Stargazing M8 Lagoon and M20 Trifid nebulae
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High School Our galaxy hosts millions of Black Holes
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High School Can gravitational waves interfere with each other?
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Undergrad Why centrifuges on Earth and in space would be the same?
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Undergrad Is the Planck length a proper length?
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Stargazing Where's your favorite place to stargaze?
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Stargazing Erecting eyepiece diagonal: opinions?
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Undergrad Finding Remnants of the Big Bang
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Stargazing Image of Galaxy M83 by Dave: July 2016
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Undergrad Dark energy and conservation of energy
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High School Would we be able to completely stop time?
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Undergrad How common is automation in Astronomy?
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Undergrad What did we know about stars in 1950?
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High School Is there a unity across scale in the universe?
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Undergrad A new exomoon candidate: Kepler-1625b I
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High School Space Stationary Orbit: Possible to Park Ship for 1 Year?
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