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 Why can't we see dark matter in the solar system?
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Undergrad Is Late Water Flow on Mars Linked to Climate Change or Permafrost Melting?
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High School Absorption of electromagnetic radiation
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High School How does the Earth move through in 3 separate trajectories?
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High School Visual simulation of gravitational lensing
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Undergrad Would a HEMP event cause the northern lights?
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High School How Does Telescope Magnification Differ from Resolving Power?
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Graduate Dark Matter Accretion Disk for Black Hole (Neutron Star)
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Undergrad Understanding Negative Inclination Orbits in Space Science
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Stargazing Efficient Follow-Up of Exoplanet Transits Using Small Telescopes
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Graduate Solving a Cipher: Celestial coordinates and precession
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Undergrad Northern lights and the magnetic field
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Undergrad Can the MOND theory be experimentally tested?
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Undergrad Main Sequence Rules: Definition & Interpretation
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High School Is there a standard mapping of celestial coordinates to geo-coordinates
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High School Question about Preventing Tidal Locking around Red Dwarf Stars
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High School Convection in Stars: The Role of Mass and Structure in Fuel Consumption
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High School What Drives the Gravitational Waves in Black Hole Ringdown?
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Graduate How deep in a gravitational well are we?
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High School Red Dwarf Stars - Planet Habitability around "Flare Stars"
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High School Does being tidally locked affect a planet's magnetic field?
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High School Did anyone actually see the space moving faster than light?
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Undergrad The use of 3D reconstruction techniques to build a galaxy model
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Undergrad Will There Be a Solar System Navigation System for Space Travel?
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Undergrad Isn't planetary rock dating really supernova dating?
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High School How Do High-Speed Objects Traverse High-Temperature Gaseous Nebulas?
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High School Can black holes truly be infinite?
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Graduate Where to Find the Best Records of Past Supernova Events
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Undergrad Is Bad Astronomy Using Bad Statistics?
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High School Could singularities be just rips in the space-time fabric?
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Undergrad Debunking the Moon Landing Conspiracy Theories: Evidence and Explanations
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High School Previous thoughts on destroying asteroids were wrong: Nuking them is a bad idea
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Undergrad A very small object following Earth in the same orbit
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Undergrad Would we know if the Milky Way were a quasar?
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High School Black Holes: Observing & Understanding | Astrophysics
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High School If Quark stars exist why do Neutron stars become Black holes?
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Stargazing Accelerating universe - luminosity data
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Undergrad How Do We Determine the Sun's Generation?
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High School For Lack of a Better Term....Moon Motion
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Graduate Continuous Field Image: Hubble Deep Field & Exoplanets
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High School How far back can we see with light?
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High School Questions regarding energy in the universe
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High School Question about time and its relation to spacetime
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Undergrad Is Tabby's Star Dimming Due to an Alien Megastructure?
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High School Photon Decoupling: Effects on Universe Expansion
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Undergrad How is Dark Matter distributed around our galaxy?
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Undergrad Confusion about absorption spectra - cool gases absorb?
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Undergrad What is the pressure gradient towards the centre of a large planet?
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Undergrad Humanity: Master fusion reactors or build a dyson sphere?
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Undergrad Too Much Dark Matter In CEG Mrk 1216
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Undergrad How would the DSG orbit the Moon?
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Undergrad Two gravitational events might be a single lensed one
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Undergrad Space docking using the Meissner effect
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Undergrad Expanding universe or tired light in a static universe?
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Stargazing Stellar Eclipse on Feb 18/19, 2019
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High School Is the Rover Mission Halted Due to Dust-Covered Solar Panels?
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New Horizons flyby of Pluto [updated for Ultima Thule]
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Undergrad How Does the Sun's Position Affect the Earth-Moon Barycenter?
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Undergrad Galaxy at z=11.1, farthest yet, unusually bright (GN-z11)
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High School How hard is it to track moon cycles
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Undergrad Why Do Stars and Hot Metal Show Different Colors at Similar Temperatures?
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Graduate Dark matter and spacetime metric
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High School The unusual motion of stars in galaxies
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Undergrad Does all orbiting space debris eventually fall and why?
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Stargazing Potential Impact of Meteoroid During Lunar Eclipse on January 21, 2019
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Undergrad Understanding the Impact of Solar Radiation and Eccentricity on Earth's Climate
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Undergrad Why Are Star Spectra Shown as Absorption Rather Than Emission?
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Graduate Unveiling the Structure of Sagittarius A*: First VLBI Image at 86 GHz with ALMA
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Graduate Schrödinger Evolution of Self-Gravitating Disks
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Undergrad Why hasn't the Oort cloud converged to a disk shape?
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Stargazing Seeing star light -- Why does it take so long?
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High School Galaxy rotational curves vs time
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Undergrad Opal Crystals on Mars: Implications for Geochemical Conditions
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High School How Old is the Milky Way Galaxy?
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Graduate How do I define Open cluster membership?
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High School Is Dark Energy really the best term?
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Graduate How Does Stellar Radiation Clear Dust from a Proto-Planetary Disc?
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High School What Mysteries Lie Between the Galaxies?
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High School Exoplanets - Suspicious evidence and fantastical conclusions
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Stargazing Astro Image Stacking (optimize DSS image stacking and post processing)
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Graduate Lagrangian vs pseudo-Lagrangian vs Eulerian
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High School Why didn't the Moon go fully red for this eclipse?
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High School Is There a Reference Point for the Expansion of the Universe?
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High School Hyperloop - Orbital Space Launch
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High School Earth from Space: What Would Hubble See?
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High School Could Solar Radiation Explain 'Oumuamua's Strange Trajectory?
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High School The Hubble WFC3 instrument has stopped working
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Undergrad Supermassive black hole eating a stellar black hole
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High School Skydiving from Space -- maximum altitude?
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High School How high can a helium baloon rise to space?
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Undergrad Would it be possible to observe an alien city?
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Undergrad How to find the position of a celestial object in the sky?
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Undergrad What is the mass of all photons emitted in the universe?
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High School Are White Dwarves Turning into Galactic Disco Balls?
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Undergrad What does this description mean? (two bodies orbiting each other)
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Stargazing Astronomers discover 2nd mysterious repeating fast radio burst
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Undergrad Solar Images Data: Where to Find?
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High School Further collapse of Neutron Stars
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Undergrad Life on Neptune: Could Its Ocean Support Complex Life?
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Undergrad Calculating STEVE's Height from Two Photos 370km Apart
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