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.
Undergrad Calculating average density of the Universe
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Graduate "Observation" of Black Hole Merger
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High School How important is gravitational red/blueshift for stars?
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Undergrad Factor of how much linear size scale has changed
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High School The Fate of Gaseous Planets: Can They Stay Stable Forever?
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Stargazing Facing difficulties with radio telescope measurements
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High School What would happen if the Sun collided with a similar star?
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Graduate Two Way Tidal Lock: Can Planets and Moons Sync?
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High School The way the moon 'behaves', coincidence or 'something more'?
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Stargazing Software to adjust exposure? webcam, astrophotography
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Graduate Gamma ray burst associated with LIGO GW event
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Stargazing Double image in reflector telescope
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Undergrad How Can We Visualize One Dimensional Strings in Space Time?
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High School North & South Star: Polaris & Sirius
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Undergrad Planet at barycenter of a binary system.
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Undergrad How would one know whether a star would be observable?
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High School How does dark matter affect planetary motion?
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Graduate Will a body ever escape in a 3 body problem?
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High School How Small Was the Big Bang Singularity When It First Exploded?
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High School Why the Earth orbits around the Sun
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High School Lowest/Highest mass of a star, star system
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High School Unraveling the Mystery of Dark Matter: Is it a Different Type of Gravity?
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Undergrad Why there are different size stars?
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High School Questions about the lifespan of the Earth
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High School How to calculate the distance between a Star and Zenith
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Graduate Black Hole Paper Outlining Process of Singularity Formation
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Graduate Are there widespread misconceptions about degeneracy pressure?
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High School Can Living in Space Lead to Immortality Through Technology?
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High School Does antimatter have positive or negative mass?
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High School Can Cosmic Strings Align Black Holes?
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Undergrad How Does Aerobraking Work for the ExoMars Orbiter?
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High School Can we see individual stars in the Andromeda Galaxy?
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High School How Does Stellar Parallax Measure Distance?
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Undergrad Can a Torus be Gravitationally Bound?
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Undergrad Question about the cosmological constant
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High School Initial Impetus Needed for Curved SpaceTime?
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Undergrad Gravitational Binding Energy of a Torus
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High School The Falcon Landing: How Did They Do It?
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High School What Are the Implications of Space Being the Ideal Medium for Light?
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Undergrad KELT-4Ab Orbital Characteristics
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High School Is Extra Terrestrial Life Possible in This Universe?
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Undergrad Is an Aragoscope Currently in Use?
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High School Binary/Ternary Systems: Could Stars Orbit a Non-Stellar Central Object?
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High School What can I expect to see with a 6inch mirror?
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Stargazing Is a Telescope for Asteroids the Key to Discovering New Main Belt Objects?
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Graduate Variance of mass inside a black hole
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High School Binary Stars Observable with Binoculars: Periodicity
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High School Can Space-Time Rip? What Causes Tears & Healing?
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Graduate Are we now alone in the Universe?
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Stargazing Comets 252P/LINEAR and P/2016 BA14
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Insights How Representative is the Night Sky? - Comments
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Undergrad Convert to "Of Date" Apparent coordinates from "J2000" coordinates
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Undergrad What is the similarity between the spectra of white dwarfs and the sun?
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Graduate Astronomical Implications of Quantum Entanglement?
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High School Day-related calculations for BC dates
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High School Gas Giants & Stars: Do They Have a Solid Part?
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Undergrad Does the Sun's Movement Create a Solar System Vortex Motion?
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High School Tidally Locked Planets: How Close to the Star?
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High School What Is the Lifespan of a Neutron Star?
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Undergrad What's Next for Astrogeology and Planetary Sciences?
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Stargazing Amateurs Discover Asteroid Impacting Jupiter
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Undergrad Could "dark matter" be regions where Lambda is lower?
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High School How Much Do Astronauts Age at Light Speed on a 50-Light-Year Journey?
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High School Why Does Free Space Permittivity Have Its Specific Value?
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High School Is the Earth the centre of the universe?
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Graduate Do Large Galaxies Exist Without Central Supermassive Black Holes?
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High School What would be the minimum size for a galaxy to have a disk form?
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Undergrad What happens to light when it reaches the edge of the universe?
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High School Planet/Dwarf Planet Classification - Regarding Rogue Bodies
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Undergrad Calculated solar irradiation not matching up with measured
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High School Discover the Phenomenon of One New Star Every Hour: Science Daily"
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High School Why is the CMB relatively uniform?
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High School How was the KSN 2011d Supernova Detected?
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Undergrad Lift-off of ExoMars mission to find life on Red Planet
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Stargazing Diameter of Charles Messier's Telescope
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Undergrad Are almost all stars in the night sky brighter than the Sun?
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High School Effect of Density and Geometry on Gravity and Luminosity
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High School How come black holes have a mass?
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High School Why isn't water on the ISS dangerous?
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Undergrad Direction of stars' orbits around galactic center
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High School Why Does LIGO Only Detect the Famous 'Chirp' Pulse from Black Hole Mergers?
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Undergrad Binary system of a neutron star with a black hole
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Graduate Solar drive / neutron atmosphere
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Graduate What is the solution to the black hole information paradox?
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Ceres' bright spots seen in striking new detail
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High School Pulsars and Neutron Stars debunked?
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Undergrad Asymmetric Tensor: Definition & Examples
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High School How does the cosmic background radiation help us measure expansion in cosmology?
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High School Gravity at the Core of the Sun: How Strong is it?
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Undergrad How to Convert Plummer Distribution of Stars Parameters into Standard Units?
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Undergrad Could Planets Have Dual Cores Similar to Cell Structures?
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Stargazing How to measure a magnifying glass (I want to build a telescope)
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High School How is the characteristic age of pulsars typically calculated?
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High School Is the Expansion Rate Truly Accelerating?
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Undergrad Detecting organic compounds in interstellar dust
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High School Orbit Likelihood: The Odds of Objects Falling into Stable Orbits Explained
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Stargazing Calculating a Telescope's Limiting Magnitude
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High School Why not the sun revolves around the Earth?
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Stargazing Setting up first telescope - need advice
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High School How Will Scott Kelly's Space Radiation Exposure Affect His Health?
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