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 How Was the Binary Black Hole Collision Predicted?
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High School How far outward can we rule out intelligent life?
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Stargazing Receding Galaxies and the Range of Gravity
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High School Are Lunar Phases Affected by Earth's Orbit and Rotation?
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Undergrad How to calculate kinematic distances in the Milky Way
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Undergrad How to determine an asteroid survey efficiency?
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High School Black Holes and Degenerate Pressure
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High School Trying to understand the Andromeda-Milky Way collision
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High School If the Earth stopped spinning? (orbiting the Sun)
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High School Does a Star's Fuel Running Out Lead to a Black Hole or Stellar Plasma?
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High School What do you see at the edge of the universe?
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High School Black Holes and Hawking radiation
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Graduate Can We Create a Magnetic Field on Mars through Moon Formation?
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Undergrad Rotation curve of galaxy Keplerian method
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Undergrad Extinct Curium 247 Found in Meteors
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Undergrad Early Earth: A Rapid Spin Through History
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Undergrad Plausibility of high density rocky planets
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Graduate How Do Black Holes Affect Time and the Fate of the Universe?
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Graduate Degeneracy pressure and stellar collapse
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Graduate Is Detecting Distant Asteroids/NEOs from the ISS Possible?
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High School Intergalactic Stars: Are There Single Stars Between Galaxies?
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High School How Far Back Can We See with Better Optics?
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Undergrad Directed panspermia mission to Mercury
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Undergrad Inconsistencies re Astronomical constants
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Undergrad Earth rotation different in hemisphere
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Undergrad Dark Matter Halo & Newton's Shell Theorem
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High School Can an object have too little mass to have a stable orbit?
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Graduate Could gamma rays imply GW sources not black holes?
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Graduate Is this possible "giant planet' a hot topic in astronomy?
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Undergrad Artificial Intelligence and astrophysics
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Graduate Interferometry of distant sources
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Undergrad Question about Orbits of Moon/Earth around Sun
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Undergrad Acceleration in an Elliptical Orbit
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Graduate Is the Expansion of Space/Time a Result of Object Motion or Framework Growth?
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Undergrad Kepler's third law for elliptical orbits
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Undergrad Increase in Radius when a Star becomes a Red Giant
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Graduate Does Dark Matter Contribute to the Mass, Charge, and Spin of Black Holes?
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Graduate Conundrum of Solving True Anomaly in Binary Orbits: A Scientist's Dilemma
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Graduate Do Magnetic Fields Affect Photons in Binary Pulsars?
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Graduate Integrating equations of motion with Earth perturbations
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Graduate How Did Earth's Rotation Change After the Moon's Formation?
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High School What Is Our Current Understanding of the Fabric of Space?
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Undergrad What causes orbits to change over time?
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Graduate Understanding the (restricted) three body problem
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Stargazing Stellar abberation (water in telescope)
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Why does the moon look full in my photos,....
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Graduate EM length of gravitational waves
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High School LIGO discovery on gravitational waves.
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Graduate Gravitational waves, compensate for the Earth's movement
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Undergrad Are researchers really this interested in 'Planet 9'
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Graduate Difference between spacetime and the gravitational field?
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Undergrad First manned mission to another planet
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High School Was a New Supernova Discovered in the Galaxy Centaurus A?
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Graduate Computing 'Sound' Frequency of a Planet: Possible Methods?
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Graduate Can a black hole shrink another black hole's event horizon?
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Graduate Expansion of the universe, acceleration limit
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Graduate Question about cause of gravitational waves
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Graduate The mechanics of gamma ray bursts
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Graduate What happens to the wave impedance of free space at ω=0?
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Graduate Can LIGO Data Replicate the Famous Michealson & Morley Experiment?
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Graduate What Does the Gravitational Wave Signal GW150914 Sound Like?
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Undergrad How diverse would a subterranean ocean be?
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Graduate Rumors of 3rd LIGO Event: New Scientific Article Sheds Light
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High School Stars we see are actually their past?
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Graduate Question on the new gravity wave discovery
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Graduate Nobel prize for Brown and Batygin?
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Graduate Is this the source of our galaxy's proper motion
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Stargazing Brightness of objects through a telescope
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Graduate Why do pulsars emit radiation from both poles?
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Graduate Why Does the ELP2000-82b Lunar Theory Differ from Jean Meeus' Adjustments?
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Graduate Is Planetary Contamination Prevention Enough for Space Colonization?
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Undergrad How are mathematical concepts translated into illustrations
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Graduate What is the trace of a second rank covariant tensor?
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Graduate Could Dark Energy Be Caused by Imaginary Mass Traveling Faster Than Light?
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Undergrad How would Earth be affected by an additional smaller moon?
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What's going on in this snapshot from the ISS?
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Undergrad Galactic Orbit Variations: Impact on Night Sky View
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Undergrad What other explanations have physicists proposed for the birth of our universe?
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What's going on with the jets from SS433?
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Undergrad Could Planets Exist in Intergalactic Space?
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Graduate How Are Mean Orbital Elements Calculated?
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Graduate Understanding The Meaning and Use of Phase Space
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Graduate What are the basic mechanics of pulsar IGR J1104-6103?
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Undergrad The Mystery of Elements in the Sun's Primordial Dust Cloud
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Graduate How to Transform Angular Velocity Vector of a Satellite from ECI to LVLH System?
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Graduate Schwarzschild radius calculation
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Graduate The Mystery of Space-Time Slow Zones
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Graduate Einstein-Rosen Bridge: Black & White Hole?
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High School What color is the sky from space for an astronaut?
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Graduate Does this neutron star have an accretion disk?
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Graduate Clarification about Earth's Precession
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Graduate Wormhole Metric: Solving Difficult Differential Equations
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Graduate Can I Build My Own Deep Space Antenna Network for Receiving Planetary Probes?
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Graduate LaGrangian Points, L1,L2, L3 and L4
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Undergrad Range of Earth's year within habitable zone?
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Graduate Brown dwarfs and close binary systems
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Undergrad How often do satellites pass the moon?
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Graduate How does the event horizon of a black hole form during the collapse of a star?
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Graduate How Does Turbulence Restore the Poloidal Magnetic Field in Solar Reversals?
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Undergrad Center of Mass of separating Orbiting Mass
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