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 How do we know that the rate of expansion of the Universe was slowing down
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High School Extracting Spectra from Sloan Digital Sky Survey Data Releases 13 and 14
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Undergrad VSl as an alternative to cosmic inflation
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Undergrad What Triggers the Universe's Most Powerful Collisions?
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Undergrad Why Are Space and Time Considered the Three Dimensions of Our Universe?
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Undergrad Minimizing diffraction in images using a photodetector
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Undergrad Can Newton's Theory of Gravity Explain Planetary Elliptical Orbits?
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High School Does the Big Bang model rule out an eternal universe?
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High School Is the Big Bounce Theory Plausible?
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Undergrad How long will the CMB be detectable?
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High School Sholz's star entered the Oort cloud ~70kya
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Undergrad Why is the density of photons in the Eddington Limit derived this way?
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Undergrad Inflation & Ω: Dark Matter & Energy Impact
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High School Does the rapid inflation of the early universe violate the speed of light?
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High School Does Human Population Growth Impact Lunar Orbit?
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Undergrad What is the recession speed of a galaxy based on the wavelengths of two stars?
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High School Physicist who Questioned Black Holes
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Undergrad Discrepancy in the Hubble Paramater
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Undergrad Is dark energy the inflow of a universal black hole?
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High School Shape of Universe | Is It Same from Every Point?
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Undergrad If Dark Matter and Dark Energy exist, what produces them?
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Undergrad Can dark matter explain dark energy?
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Undergrad Qs re aspects of the Holmdel Horn Antenna used to find the CMB
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High School Third Cosmic Velocity: Will Voyagers Leave Solar System?
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High School Are the Universe and Observable Universe Identical?
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Undergrad How is the universe expanding if the speed of light is finite?
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High School What Is The Energy of a Point In Space?
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High School Does a partial solar eclipse never completely rise?
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Undergrad Can Tidal Locking Occur in Binary Neutron Stars Before Merger?
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High School Who Was the Great Man We Lost on Pi Day and Albert Einstein's Birthday?
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High School Remembering the Legacy of Stephen Hawking on Pi Day - BBC News
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High School Life Outside Our Planet Without Oxygen and Water
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High School Gravity Emergent: Matter or Big Bang?
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Undergrad [Question] Tell me the latest catching news about black holes
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Undergrad Would you see stars on the early Earth?
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Undergrad Does space have its own density?
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Graduate IRAF xgterm implot unresponsive (mac OS High Sierra 10.13.3)
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High School What do people mean when they say the Universe is Computable
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High School Confusion about closed timelike curves
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Undergrad Was the Universe Really Dark and Quiet After the Big Bang?
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Graduate Help with an Apollo space program flight simulation guide
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Undergrad Observation of Alfvén waves heating the Sun's corona
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Graduate Lane-Emden Eqn 5: Solving for Polytropic Index
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Undergrad Chandrasekhar Mass and the Relativistic Star: Finding the Value of K for n=3
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Undergrad Is the Sun's Magnetic Field Driven by a Double Dynamo?
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Undergrad Are Friedman Equations Valid at the Moment of the Big Bang?
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Undergrad Do dark matter and dark energy have an effect on the red shift?
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High School Spiral galaxies: Multiple axies of rotation?
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Graduate What is the importance of EM measurements in astrophysics?
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High School Massive Space Objects Have Connections to QM Math
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High School How can the Universe be infinite and yet have a finite age?
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Undergrad Confusion about Corotational and Lindblad resonance
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Undergrad Calculate Voyager trajectory using JPL data
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High School Are the profiles for reflecting/refracting spherical?
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Undergrad Revolutionizing Space Travel: The Innovative Design of the Circular Module
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High School Is Space Expanding in a Relativistic Way?
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Undergrad How close is Earth to the closest black hole?
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High School Are Dark Matter Concentrations on Earth Seasonal?
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Undergrad Wonderful new images of the center of our galaxy
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Undergrad Universe's First Stars Interaction with Dark Matter
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Undergrad Can a Single Observation Determine Retrograde Motion?
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Undergrad Perceived vs. Actual Velocity in an Expanding Universe
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Undergrad Heat death of the universe and the 3rd law of thermodynamics
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High School How large would the sun be if it were frozen?
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Undergrad Lunar apsidal precession relative to equinox
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High School Black holes and universe expansion
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Undergrad Is the Universe a Mathematical Simulation?
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High School When Does a Star Form & What's Best for Life?
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Undergrad Does the pattern of the CMB change?
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High School What do I need to become an Astrophysicist?
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Graduate Interacting Universes: Dark Matter & Gravity
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Undergrad Supernova - the Birth of One is Spotted
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Undergrad Will NASA Reveal Oxygen in TRAPPIST-1 Exoplanet Atmospheres?
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Graduate Calculating the Altitude of a Nominal Burst
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Undergrad Can Dark Energy Cause Deviations in Extremely Large Black Holes?
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High School How do we measure the Spectral Energy Distribution of quasars?
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High School Dark energy causing universe expansion?
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Undergrad Help me understand these cosmological horizons and graphics
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High School Current values for Friedman's scalar and its derivative?
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High School Conflicting thought on quasars and black holes
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High School Accelerated expansion of the universe
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High School Black hole gravitational pull questions
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High School Black Holes Must Have Singularities Says Einstein Relativity
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Stargazing Where to buy telescope that measures spectrum?
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Stargazing How do you make polar alignment easier for stargazing photography?
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Undergrad How bright will Musk's Tesla car be in the sky?
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High School Maximum weight of a Neutron star
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Graduate Galaxy mass distribution without DM
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Graduate Virial thereom as applied to clusters of galaxies
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Graduate Planck 2015 CMB temperature individual pixel variance
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Undergrad What it takes to start a space exploration company?
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Stargazing Solar Eclipse on Feb 15, 2018 | Time and Date
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High School Anything from Nothing: Uncovering the Possibilities
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Undergrad Continuous Lensing Models: Discrete Data
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Undergrad Changing the ISS's orbital inclination to match the Moon
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Undergrad Optimizing Lunar Power: North vs. South Poles for Mining and Moonbase Sites
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Undergrad What is the New White Dwarf Mass Limit?
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High School Could we launch spaceships from a long horizontal ramp?
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High School Why are aurora always in the vicinity of Earth's poles?
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High School Adding a huge electric charge to a black hole?
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