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.
Graduate What is a dynamic spectrum measurement?
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Graduate Is the Universe Undergoing an Infinite Series of Expansions and Contractions?
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Graduate How to calculate Helium lensing
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High School What causes orbits to be inclined?
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High School Does Jupiter have an angular momentum problem?
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Undergrad Some questions about absorption lines
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High School Question about the s-process and r-process in stellar evolution
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Undergrad At what wavelength do we observe ionized gas?
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High School Nervous about James Webb Space Telescope?
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Undergrad Can a Tube Launch System Harness Atmospheric Energy to Reach Space?
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High School Pair Instability Supernovae & Electron Capture Supernovae
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High School Earth's Hubble velocity and measuring Hubble at large distances
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High School Help in explaining a question on gravity
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Undergrad Do we first determine the gravity or density of a celestial object?
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High School Star at black hole event horizon
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Graduate Orbital shutter as a beacon for interstellar communication
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Graduate How you add gauge groups to spacetime
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High School The composition of interstellar dust
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Undergrad Acquiring a Small Dataset of a pulsar signal
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Undergrad Determining Relative Position of Space Object to Earth
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High School Why is Carbon considered volatile?
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Undergrad Fast Radio Bursts (FBR) detected in our own Galaxy
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The International Space Station as a Human Abode
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High School NASA discovers water on the moon
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Graduate Average of the power spectrum of Poisson noise
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Undergrad Fourier Series and Cepheid Variables
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Undergrad Shape of Dark Matter Halos & Visible Matter Angular Momentum
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High School How does the observable Universe have meaning?
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Undergrad What Mechanism Creates the Jet Emanating From a Quasar?
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Undergrad Earth's Rotation & Orbit: Effects on Space Objects?
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Undergrad Can Alfvén waves be observed on a stellar spectrum using amateur equipment?
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Closed vs. Open Crawlspace & Automatic Vents vs. Dehumidifer?
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Graduate Biological Agent Phosphine Found on Venus
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Undergrad Book to study the big bang theory
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Undergrad Number of known asteroids reaches 1 million
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Undergrad Huge Hole Found in the Universe
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Stargazing What are some good beginner telescopes for under £100?
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Graduate Efficiency of a heat engine in space
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Undergrad How fast do galaxies 1 billion light-years away move away from us?
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Undergrad Q: Volume of the largest ellipsoid in space which contains no stars?
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Undergrad What happens to a small star after burning all of its fuel?
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High School Some historic remarks on astrometry by Terence Tao
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Undergrad IRAS Filter Profile: Computing ##\lambda_{mean}##
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High School Phys.org - Carbon creation finding set to rock astrophysics
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Undergrad Preprocessing FIT Files to Bias and Flat Correction Using Python Script
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Undergrad Black Hole Event Horizon Hypothesis
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Undergrad Which will be brighter when it supernovas - Eta Carinae or Betelgeuse?
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Undergrad Do Black Holes Exist? | Physics & Stephen Hawking
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High School Why is an inverse logarithmic scale chosen for the magnitudes of stars?
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Stargazing Observations and telescope/microscope design questions
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Undergrad Can LIGO Detect Gravity Waves from Directly Above or Below?
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Undergrad Red shift / Blue Shift - Gravity Well Roundtrip
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High School What is the relative speed of two groups of quasars with different redshifts?
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Undergrad Apparent distance to far galaxies
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High School There's Gold in Them Neutron Stars - or - Maybe Not
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Undergrad Object in or out of a circular field of view? (celestial coordinate system)
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High School If a coronal ejection like this happened during a total eclipse ....
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Undergrad Is a Robust Estimate of Tau Ceti 'f' Albedo Possible?
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Undergrad Rotation rates of planets seem odd?
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High School Measuring distance between two stars in a binary system
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High School Is there a forum where people can share and discuss features on Mars?
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Undergrad Converting "Luminosity per unit wavelength" to "Luminosity per unit frequency"
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Undergrad Question Regarding Determining the Mass of Venus
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Undergrad What powers the quasar magnetic beams that power jets?
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Undergrad Material source of the quasar redshift
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Undergrad What are the names of these 2 craters on Mars....
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Undergrad What kind of matter formed Primordial Blackholes?
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High School What is the definition of a black hole?
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Undergrad What is the correct way to calculate the area of the sky in square degrees?
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Undergrad What happens if a strangelet falls in to a black hole?
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Stargazing Apparent vs actual position of stars
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Stargazing Sun observation (Gregor / Teneriffa)
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High School Tidal Locking question about the Earth-Moon system
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Undergrad Remains of collapsed stars as touching binary planets?
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Stargazing Possibility of detection of Earth approaching objects by gravity?
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High School Are there any blue shifted galaxies name rc2?
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Stargazing Spotting Comet NEOWISE with Naked Eyes: A Spectacular Visual Experience!
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Undergrad Does a particular star's brightness change throughout the year?
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High School Unraveling the Mysteries of Dark Gravity
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Undergrad Speculative Term in Drake's Equation
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Undergrad Effects of hydrogen anions in the solar atmosphere
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Undergrad Glass bottle with a prolonged neck that continues into the inner space
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High School By what process do different sized stars form?
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High School Mars Terraforming: NASA & Beyond - Plans & Prospects
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High School Largest Moon With A Concave Orbit
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Old Astronomy Book Predicts the Kuiper Belt
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Stargazing Using DSLR movies for Astro Image stacking application
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Undergrad Does gravity affect aging on different planets?
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Undergrad Magnitude limits for active galactic nuclei
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Undergrad Does the expansion of the Universe affect orbiting bodies?
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High School UV timelapse of the Sun in 4K, 52 min = 1 second
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High School Why is the momentum of a star equal to the momentum of a planet?
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Undergrad Understanding the Discrepancy: Why Does the Moon Have Less Gravity Than Earth?
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High School Question re binary star systems & possible orbits
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Undergrad Are stable orbits possible between Mars and Jupiter?
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Stargazing The Curse of Elon Musk: Redirect Satellites to Sun or His Backyard?
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Undergrad Can you See Neighboring Asteroids from an asteroid?
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Graduate Oddly specific question for help regarding a satellite in a shadow
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Undergrad Are Intensity and Magnitude independent of the radius of a star?
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High School What effect will SpaceX's 42K satellites have on astrononical viewing?
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