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 Relativistic Redshift and understanding it's approximation
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Graduate Peculiar Acceleration - Understanding an Equation
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High School How Can We Prove That Space is Expanding?
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High School Why is the Webb Space Telescope placed at L2?
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Undergrad Does Dark Matter Have a Temperature?
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High School Does dark energy's effect or strength vary over time?
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High School Chasing the Moon: Astronauts & Technology".
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Undergrad Ship Braking: Blue or Red Doppler Shift?
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Graduate Deriving EDE Equation: Need Opinions
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Stargazing Why no Phase Contrast Telescopes?
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High School An Ancient Solar Storm 9200 years ago is Cause for Concern
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Undergrad Portable telescopes inside the International space station (ISS)
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Undergrad Please check my calculation of the radius of a finite universe
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High School The Colors of The Moon (Doppler Effect)
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Undergrad A relationship between flat vs. finite and (2) Hubble constant tension
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Undergrad Antimatter-matter asymmetry, Law of charge
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High School What are the potential causes of the universe's eventual demise?
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Undergrad SN 2019hgp, new type of supernova? Wolf-Rayet progenitor?
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High School Big Bang: Size of the Universe at Different Epochs
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Undergrad Balmer Absorption Lines in Different Temperature Stars
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Undergrad Is the animation/graphics for NASA's Webb telescope in error?
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High School Does dark energy or cosmic inflation explain flatness?
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High School How do the candidates for Dark Energy 'work'?
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Undergrad Could the Universe's Early State Be a Superposition of High and Low Entropy?
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High School Understand Bonnar-Ebert Model: Complement to Jeans Law?
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High School Does the CMB itself tell us that it started at 3000K?
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Graduate How Do Recent Studies Impact Our Understanding of CMB Anomalies?
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Undergrad Gaia vs DESI: Comparing Largest Star Maps Ever
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Undergrad Optimizing Sensor Thickness for Efficient Optical Wavelength Detection?
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Undergrad Can the big rip ever be ruled out?
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Undergrad Is the false vacuum theory not well accepted?
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High School What is the mass distribution and rotation curve of galaxy IC1101?
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High School What Space Does the Universe Occupy?
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Undergrad Jupiter atmosphere, turbulence and ocean fluid dynamics
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High School Why doesn't cosmic inflation violate conservation of energy?
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Undergrad Are two-body orbits with a cosmological constant unstable?
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Undergrad Equivalence of Universe Accelerating Expansion?
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Undergrad Force of gravity on JWST while orbiting L2
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Graduate Viewing Constellations from Opposite Hemispheres
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Undergrad Does gravity compress matter in planets?
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Undergrad We watched a red supergiant explode to ordinary type II supernova
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High School Accelerating expansion of the Universe
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High School Earth's orbit and the expansion of the Universe
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Undergrad Do Stars Fuse Elements Heavier Than Iron Before Imploding?
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High School Lunar libration time lapse with real photographs?
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Undergrad Question about the expanding Universe and the Andromeda Galaxy
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High School Propellantless Rocket: Unleashing the Power of Breit-Wheeler
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Undergrad How is light modeled in astrophysics?
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Undergrad How to change CSpice initial velocity from an Asteroid SPK file?
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Stargazing Understanding the Chandrasekhar Mass Units for Relativistic Lane Emden Equations
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High School What is the relationship between expansion and curvature?
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High School What If Universes Were Made of Antimatter?
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High School So, a black hole and an antimatter star bump into each other....
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High School Question about a horizontal sundial
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Undergrad Cosmological Positioning - How does one determine?
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Stargazing 3D/2D Universe Model (DSO, stars etc.)
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Undergrad Do all geodesics begin and end at the big bang?
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High School Is the Universe's Matter/Antimatter Asymmetry a Key to Understanding Its Origin?
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High School What do they mean when they say something is so many light years away?
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Undergrad Is EK Draconis' binary status a factor in its ability to produce large CMEs?
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Undergrad How long did inflation last in an eternal inflating universe?
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Stargazing Level of details in prime focus vs eyepiece images
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Graduate Calculating the variance of integrated Poisson noise on a defined quantity
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Undergrad How Big of an Object Orbiting Closer to the Sun Than Earth Could Be Overlooked?
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Undergrad Bullet Cluster explained without 'dark substances'
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Graduate How Does the Ring Current Persist Despite Short-Lived Particle Drift?
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Undergrad Why is the Big Bang shown always directional, instead of globally?
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High School What is the relationship between inflation and the expansion of our universe?
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Undergrad What is the origin of spatial inhomogeneities in the Universe?
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High School Could satellite be geo-stationary away from equatorial plane?
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Undergrad What are the Coordinates of Sagittarius A* at Different Julian Century Dates?
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Undergrad History of astronomy and the Phases of Venus
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Graduate Molecular cloud collapsing and fragmentation
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Undergrad Ultraluminous X-ray source in the galaxy NGC 55
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Undergrad A New Idea for the Origin of Earth's Water
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Undergrad Dark Matter as a condensation of photons in a space
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High School Process of a sun changing into a white dwarf
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Undergrad EDE - Solving the Klein - Gordon Equation for a scalar field
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Undergrad Is the Anthropic Principle a Logical Explanation or Just Confusion?
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High School Is There a Theoretical Center in a Finite Universe?
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High School Observers sending signals to measure expansion
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Undergrad Is the Hubble constant a constant or is it a parameter?
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Undergrad Cosmology: Compton Drag Explained
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Undergrad Oumuamua: Solar System Acceleration & Origin Traceability
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Undergrad What is the average distance between objects in the Kuiper belt?
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Graduate How is the Temperature of Gas in a Cluster Calculated?
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Undergrad Reading Paper on Earth Occultation Technique
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Graduate Hubble Tension and Cosmic Acceleration: A measurement artifact?
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High School What is the Maximum Mass of a Neutron Star?
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High School Observational bias? Lack of massive black hole observations....
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Undergrad Is the Sun a low-mass star or a medium-mass star?
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Undergrad Questions about the Voyager spacecraft
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Undergrad How Does Earth's Rotation Vary Daily?
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Undergrad Relativistic Doppler Effect near a Black Hole
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Undergrad Image for increase in gravitational potential energy in radial field
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High School Mass transfer between neutron stars in a binary pair
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Graduate Is this MOND advance a big deal?
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Undergrad How do gravitational waves differ from the expansion of the Universe?
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Undergrad Why do gravitational waves travel at the speed of light?
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Undergrad Bias and dark current from a graph of mean signal vs exposure time
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