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 Astronomers detect biggest explosion in the history of the Universe
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Undergrad Ptolemaic Model of the Solar System
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High School If space is transparent how can we not view light from a black hole
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High School How to calculate the energy released?
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Stargazing M - M as the distance modulus, and a question about the distance ladder
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Stargazing How much brighter is the Sun when viewed from space?
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Stargazing Is a star's size changed due to gravitational deflection (lensing)?
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High School Why / How do we feel heat from the sun
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Undergrad Is there a distinction between angular resolution and angular discrimination?
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Undergrad LIGO+Virgo saw something unknown
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High School Why Is There No New Data from LIGO/VIRGO?
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High School Are Early Galaxies Indicating a Future Dead Universe?
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High School Learning to use a Solar Scope with an H alpha filter
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High School The highest resolution image of the Sun’s surface ever taken
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Undergrad Is there an experimental proof that an Earth/Moon barycenter exists?
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Undergrad Earth-centered frame with Earth-Sun line fixed
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Undergrad Questions about the expansion of space on galactic scales
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Undergrad Viewing Planets or stars from a high altitude
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High School Why does Jupiter have a stronger gravitational pull than Earth?
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Undergrad The solar system and the Coriolis effect
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Undergrad How to calculate the wavelength of light coming from 1 light year away
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Undergrad Is Dark Matter's Gravitational Force Weaker Than Visible Matter's?
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Undergrad Are there upper and lower limits to the inverse square law?
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Undergrad Finding the Sun's Angle from Longitude, Latitude & Time/Date
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Graduate Definition of the IAU for the ecliptic plane
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High School Colliding Neutron Stars Collapse into Black Holes
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The first British woman to space is a <can't say>
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High School Can We Generate Detectable Gravitational Waves in a Lab?
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High School Debunking Dark Energy Theory: New Evidence Challenges Estimated Age of Universe
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High School Matter falling into a black hole
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Undergrad What causes the mysterious eclipses in Epsilon Aurigae?
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Graduate Understanding Ohm and Hall Diffusion in Cosmic Rays
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Undergrad Help with the color of a star cluster
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Undergrad Why do dark matter and baryon matter have different distributions?
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Undergrad Does gravity act differently on a Solar System, a Galasy, and the Universe?
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Graduate Three Body Problem - Statistical (almost) Solution
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High School A second galaxy with no dark matter
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Undergrad Questions on Galactic Coordinate Systems
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Stargazing Can I Use a DIY Hydrogen Alpha Solar Filter for Detailed Sun Photography?
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Undergrad Can Flat Rotation Curves in Spiral Galaxies Be Explained by Dynamical Friction?
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Undergrad Visibility of celestial bodies during the daytime
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High School Is this a star before it hit the ground on Earth?
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High School See the first precise pulsar surface map
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High School Dark Matter Distrbution in Galaxies
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Undergrad Determining Degenerate Gas in Stellar Structure
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High School New Storms on Jupiter, by Juno spacecraft
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High School What factors influence the flattening of planets in our solar system?
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Undergrad Is This Newly Discovered Black Hole Breaking The Rules of Stellar-Mass Limit?
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Undergrad Absorption lines and emission lines in stellar spectra
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High School Cosmic Rays Charge: Expect Reissner-Nordstrom Black Holes?
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High School What Insights Has Voyager 2 Provided From Interstellar Space?
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Undergrad Help with the Virial Theorem please
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Undergrad True length of sidereal year in 6000 b.c.e.
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Undergrad First results from Parker Solar Probe on Wednesday (18:30 pm UTC)
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Undergrad Building a solar system simulator
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High School Can Neutron Stars Lose Energy Through Radiation?
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Undergrad Inside The 24/7 Search For Another Habitable Planet Within 100 Ly
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Undergrad Does Dark matter get trapped in black holes and increase their mass?
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High School Why Jupiter, Saturn and the Sun have a distinctive and sharp boundary?
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Undergrad Which instruments are used to determine the composition of dark matter?
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High School Molten Core of Mars: Could Tidal Action from a Moon Create a Magnetic Field?
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High School Simulation of a Galaxy, most detailed large-scale simulation to date
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High School Are supernovas more likely to produce neutron stars or black holes?
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Undergrad The Supergalactic plane and a coordinate system
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Undergrad Dark Matter Mass: Evidence of Low-Mass?
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Undergrad How Far Can the Square Kilometre Array 'Listen' for Extraterrestrial Signals?
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Undergrad Neutron Star Core: Empty Obloid Cavity & Exotic Content?
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Graduate SPACE ROCKS: Latest meteorite into my collection
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High School Meteor Storm Possible Thursday Night November 21-22
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Graduate In the power spectrum, why is the peak frequency at the first harmonic
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Undergrad Help With Simple Orbital Modeling
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Undergrad Can S5-HVS1 Retain Its Planets?
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High School Water found on potentially habitable exoplanet
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Stargazing Witness the Transit of Mercury: Nov 11, 2019
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High School Will Big Stars Turn Into Red Supergiants or Red Giants?
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High School If I were to observe a black hole....
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Undergrad Angular Momentum in a Solar Nebula
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High School Are There Any Kardeshev 2.0 Civilizations in the Milky Way?
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High School How well do we know solar activity?
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High School Milky Way is "in the top percentile of all the galaxies that exist"
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High School Structure and Dynamics of Blue Supergiants
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Undergrad What is the new source of space radiation discovered near Earth?
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Undergrad Where does gravity switch from stronger to weaker, if it does?
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Graduate What Does Space Gives Moving Orders Mean for Gravity in Einstein's Universe?
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High School What Are the Force and Speed of Pulsar Winds?
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Undergrad Interpreting a scale factor vs. distance graph
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Undergrad Separating Masses in Kepler's Third Law
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High School The search for habitable exoplanets in Alpha Centauri
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Undergrad Confusion over what exactly constitutes the ecliptic
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Undergrad Mass-luminosity relationship for red giants and AGB stars?
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Graduate Are Retrograde Satellites the Key to Stable and Optimal Orbits?
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Undergrad Question about Galactic Rotation curves in the Milky Way galaxy
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Undergrad Calculating Speed and Acceleration of a Gas Blob Orbiting a Massive Black Hole
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High School Question about the Sun's gravitational influence on the Earth and its moon
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Undergrad Would a rover on an asteroid float away because of the low gravity?
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Undergrad How is asteroid 101955 Bennu possible?
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High School What is the shape of an asteroid impact on Earth?
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Friday's Historic All-Woman Spacewalk
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High School Creating an Interstellar Dust Nebula Experiment: Tips and Tricks for Success
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Undergrad What happens to gravitational waves?
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