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 Can Electromagnets Propel Starship Orion Using Nuclear Explosions?
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Undergrad Is it possible to unbind a neutron star?
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Undergrad How much better is HabEx going to be relative to Webb?
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Undergrad Measuring the rotation curve of galaxies
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Undergrad How far away are stars in a typical star cluster from each other?
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Undergrad What is the luminosity of Earendel?
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Undergrad Jupiter appearing flashy - red on top, blue bottom
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Undergrad Why are Saturn's moons so bright?
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Undergrad Have you seen the JWST Observing Schedule?
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Undergrad Why does the core collapse happen so fast in a supernova?
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Undergrad Gravitational binding energy of the sun?
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Undergrad Can a Satellite Maintain its Angular Velocity with Continuous Low Thrust?
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Undergrad JWST Image Reveals Processes Ejecting Material in Star Formation
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Undergrad Tides on a nearly tidally locked planet
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Undergrad How to interpret this new Keck spectrum picture of Jupiter?
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Undergrad Jansky: When Physics Majors Should Expect It
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Undergrad Database of binary star data info within 10 PC of Earth
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Undergrad Can I Find Alternative Eyepieces for My Quantum 5 Binocular?
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Undergrad Kepler orbits for planets of similar masses
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Undergrad Why Do Galaxies Spin and What Drives Their Motion?
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Undergrad What are the possible states of cold iron balls?
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Undergrad Orbital Velocities and Mass Distribution in Galaxies
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Undergrad Would it be possible for a black hole to have a "solar system"?
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Undergrad Could Passing Asteroids Alter Milanković Cycles and Trigger Climate Change?
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Undergrad Do All Galaxies with Dark Matter Halos Have Flat Rotation Curves?
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Undergrad Identification of matter and dark matter proportions
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Undergrad Interpreting solar event flux units
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Undergrad How accurate is the distance to M4 and its stars according to different sources?
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Undergrad What is the temperature dependence of the NIRCam sensor's responsivity?
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Undergrad Upper limit of relativistic spin?
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Undergrad Can we see light pollution from space?
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Undergrad Does all infrared get detected as heat?
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Undergrad Gas Density of Lunar Crater Rims: Comet vs. Asteroid Impacts
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Undergrad Question about the William Herschel Telescope's new "Weave" device
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Undergrad Help me on the timeline of star formation in the early Universe
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Undergrad Voyager I and Voyager II informative video
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Undergrad Starlink and gaining energy from orbiting
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Undergrad Could a bubble shield at L1 combat global warming?
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Undergrad What do high-mass X-ray binaries, or HMXBs, tell us?
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Undergrad How to calculate an unknown planet's orbital period?
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Undergrad Solar system simulation errors
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Undergrad Help with Sunrise & Sunset formulas please
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Undergrad Amount of black hole entropy inside the Universe?
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Undergrad What is the density of the Carina Nebula?
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Undergrad Is the eccentricity of the lunar orbit constant?
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Undergrad Confused by this armillary sphere in Australia
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Undergrad Mass distribution in a celestial system
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Undergrad Earth's orbit not perfect ellipse
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Undergrad SpaceX says 5G expansion would make Starlink 'unusable' for most Americans
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Undergrad Why are Saturn's rings in its equatorial plane?
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Undergrad The gravitational center of the Earth
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Undergrad How to find RAAN and argument of perigee for a satellite?
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Undergrad Voyager Spacecraft beginning to Power Down
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Undergrad What is a typical mass density for inter-galactic gas in a cluster?
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Undergrad Lateral offset from a centered star as measured at the focal plane
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Undergrad Magnetar Mystery: How Do Neutrons Generate a Magnetic Field?
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Undergrad What is the current status of Voyager 1's attitude and control system?
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Undergrad How to use astronomical spectra?
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Undergrad European Southern Observatory (Event Horizon Project team) – picture of Sgr A*
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Undergrad What happens first -- Sun Red Giant or Andromeda collision?
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Undergrad Dawn dead in Ceres orbit, ran out of fuel Oct 2018
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Undergrad Do gravitons interact with gravitons?
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Undergrad A busy and interesting night sky in Mackinaw City
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Undergrad What Prevents Electrons from Expanding Radially in White Dwarfs?
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Undergrad First Interstellar Object to Hit Earth
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Undergrad Gravitational Field with Dark Energy: Observable Effects?
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Undergrad What Does Radiation Do to Space Ice?
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Undergrad MOND from galaxies that are fractal
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Undergrad Is a horseshoe orbit a hyperbolic orbit?
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Undergrad Information loss in black hole, why is it a problem?
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Undergrad Does Dark Matter Fall into Black Holes?
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Undergrad Surface Differential Rotation by measuring the position of sunspots
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Undergrad Where does the Sol system lie in the cross-section of the Orion Spur?
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Undergrad How Does Gravity Affect Spectral Line Strength?
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Undergrad Back of the envelope estimate, energy flow in a box of plasma
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Undergrad What causes the precession of the equinox?
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Undergrad Universe Expansion: Does Less Dense Mean Boundaries?
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Undergrad Impact on Earth: Calculating Energy
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Undergrad Are Two Supermassive Black Holes on a Collision Course?
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Undergrad Energy conservation in Doppler (NOT cosmological) redshifts?
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Undergrad Why does Webb orbit L2, is it because of the Moon?
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Undergrad How to Experimentally Measure the MTF of a Lens?
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Undergrad Radioactive Dating of Asteroid Elements: How Do Scientists Know?
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Undergrad What Are the Theories Behind the Moon's Formation?
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Undergrad Can We Predict the Sun's Path from a Single Altitude Measurement?
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Undergrad Ship Braking: Blue or Red Doppler Shift?
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Undergrad Portable telescopes inside the International space station (ISS)
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Undergrad Antimatter-matter asymmetry, Law of charge
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Undergrad SN 2019hgp, new type of supernova? Wolf-Rayet progenitor?
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Undergrad Balmer Absorption Lines in Different Temperature Stars
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Undergrad Is the animation/graphics for NASA's Webb telescope in error?
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Undergrad Gaia vs DESI: Comparing Largest Star Maps Ever
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Undergrad Optimizing Sensor Thickness for Efficient Optical Wavelength Detection?
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Undergrad Is the false vacuum theory not well accepted?
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Undergrad Jupiter atmosphere, turbulence and ocean fluid dynamics
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Undergrad Force of gravity on JWST while orbiting L2
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Undergrad Does gravity compress matter in planets?
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Undergrad We watched a red supergiant explode to ordinary type II supernova
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Undergrad Do Stars Fuse Elements Heavier Than Iron Before Imploding?
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Undergrad How is light modeled in astrophysics?
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