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.
High School Is it possible to keep a rip in space open? All info welcome
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Undergrad Do quasars and blazars exist today?
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Undergrad Function driven solar system model.
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Graduate Witness the Majesty of the Ring Nebula: 100% Crop & (Nearly) Full Frame
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Undergrad How can we see galaxies behind other galaxies?
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Undergrad What Causes Gravity in the Cosmos?
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Undergrad Calculating mass of Milky way Galaxy
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High School How far can transmissions go in space?
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Graduate Does gravity get destroyed in a black hole ?
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High School Is Pluto Really Bigger Than Eris? New Horizons Settles the Debate.
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Stargazing Is there a proper way to clean a telescope mirror?
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So is this scary? (Black Hole in binary system)
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Graduate Planetoid formation, spherical or not.
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Are Helios Quantum 5 binoculars worth the investment?
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Graduate I have always wondered if Photons are magnetic and if so are
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Graduate Evolution of Life-Supporting Elements
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Graduate Q: Measured changes in the CMB radiation?
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Graduate High resolution observations of dark matter?
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High School Why does the Earth have a tilt but the moon doesn't?
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Undergrad Could We Hear the Sun If Sound Waves Travelled Through Space?
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Graduate Black holes swallow space and time?
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Graduate Effect of high intensity electric and magnetic fields on gravity
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Undergrad Question about the astro imaging program ds9
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Undergrad Origin of Galaxies and Super Massive Black Holes
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Undergrad Why does gravity collapse and stars explode?
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Graduate Collapsars vrs. QM degeneracy pressure
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Graduate Earth moon motions, distance etc.
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Graduate Is a Black Hole's Entropy Truly Lost?
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High School Help in Understanding Black Holes
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Graduate From RTN reference frame to ECI and orbital elements
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Undergrad Solar System barycenter - Orbit of planets
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Nice lunar and planetary conjunction
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Milky Way Composite: Vacation Night Photo
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Graduate Do neutron stars, pulsars, magnetars etc. have weather?
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Graduate How Can we Find the Escape velocity of a black hole
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Graduate I don't understand what is the meaning of phase? (phase space, phase point, etc)
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High School Why do planets and stars flicker?
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High School Large, Persistent Eclipse/Shadow On Earth?
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Undergrad What Are the Physical Components of Space?
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High School Avoid Killer Asteroids: Simple Solution Discovered
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Undergrad What materials can a star produce before dying?
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Undergrad Question about interstellar travel
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High School Why does the moon orbit the sun?
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Graduate Geo Coronal Absorption Frequency
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Undergrad Ceres Craters: Investigating NASA's Dawn Animation
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Graduate How to know there is a frequency shift?
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Undergrad Intensity of light along the iridium flare
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Undergrad Cosmological Expansion: Is There a Limit?
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Undergrad Distance of GJ 436b to GJ 436 - doesn't work out.
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Graduate 800+ ultra-diffuse galaxies in Coma cluster
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Undergrad What Causes Radio Blackouts During Space Capsule Descent?
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Graduate Graviton vs Einstein's Curvature of Spacetime
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High School After supernova explosion sound is created....
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Graduate Like spacetime -- can sound be taken as a fifth dimension?
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Undergrad Has the Value of G Constant Changed Recently?
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Undergrad How do different bodies in the Solar System affect Earth's gravitational pull?
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Undergrad How did Kepler derive his laws WITHOUT law of gravitation?
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Graduate Higgs Bosson, manipulate gravity, 4 dimensional space.
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Graduate Determining The Size and Age of Our Universe
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Undergrad Variations between Sunrise & Sunset timings
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What Does the Observable Universe Look Like?
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High School Living in a Rotating Space Habitat: Perception and Challenges
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Graduate Speed of light inside a black hole
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Graduate Argument of the Perihelion Projection
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High School What absorbs Ultraviolet radiation?
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Stargazing Create homemade reflector telescope by own
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Undergrad Where is my calculation of sun angle incorrect?
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Undergrad Possible observation of Pop III stars....? -NY Times article
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Graduate Effect of Rotation on the Earth and Planetary Disk(s)
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Graduate How Do Planetary Distances Influence Retrograde Motion Durations?
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High School The Mystery of Gravity: Doubts Answered
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Undergrad Difference between conductors and empty space
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Are Multiverses and Intelligent Life More Than Just Beliefs?
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Undergrad What would it be like to be at a Lagrange Point?
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Graduate What is the role of dark energy in the expansion of the universe?
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Graduate How Can I Measure Stellar Aberration Accurately?
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Graduate Interstellar Exocomets Density & Impact Probability
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Graduate Gravitational attraction between two atoms
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Graduate Star post-main sequence timescale
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Is Stacking RAW Images the Key to High-Quality Astrophotography?
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Undergrad Venus Transit - What should be a simple problem
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High School Need to exchange a helical focuser for a rack and pinion one
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High School How large an area is that brightly illuminted patch from stars covering?
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Graduate Could energy be extracted from spacetime expansion?
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Graduate 814 Ghostly Galaxies in the Coma Cluster
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High School Will the Voyager Golden Records withstand the harshness of space?
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Graduate White Dwarfs Catalogue - Find Mass & Radius Data
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Graduate Hubble redshift and calculation of galactic rotation curves
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Undergrad Pluto's moon Nix and its wild tumbling orbit
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Undergrad Discover Earth's Plasma Rings | Cleo Loi Proves Existence of Plasma Tubes
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Graduate Understanding Solar UV Radiation and Its Impact on Earth: A Brief Overview
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Graduate Are Primordial Black Holes Still a Viable Candidate for Dark Matter?
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Undergrad Is it theoretically possible for a star to orbit a planet?
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Stargazing Reflector telescope, what to do?
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Graduate Is Deja Vu the Brain's misinterpretation of Spacetime?
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Undergrad Milky Way Mass: 60,000 Ly from Galactic Center
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I just saw a fireball and nobody cares
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Graduate Star Nuclear Reaction: P+P, D+P, He3 and CNO Cycle
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Undergrad Why do small bodies stay in orbit around large bodies?
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Graduate Sky temperature profiles and black body radiation
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