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 Astrophysics Science Fair Project Ideas?
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Undergrad What's the feasibility of space mining companies?
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Graduate Photon densities within galtactic disc compared to CMB
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High School Delta-v for orbit if already at ideal velocity and altitude?
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Stargazing H.E.S.S. gamma ray telescope got an image of the moon
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Undergrad Why are stars grouped in galaxies?
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High School Unraveling the Mystery of Hydrogen Times Pi Frequency
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Undergrad How to Calculate Longitude and Latitude Speed from Cartesian Values?
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Stargazing Amateur Astrography: Stitching Together Large Fields of View
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Undergrad Planetary Orbits in AU - Stability & Mass Limits
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High School Explaining the Color Variations of Main Sequence Stars
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Stargazing Can a Planet Have Multiple Moons with Unique Orbital Patterns?
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High School Aerogel comet particle capture experiment?
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High School What is the total size of the Asteroid Belt in kilometers?
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High School Simulating orbit trajectory based on position and velocity
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Undergrad What is the average number of planets per star?
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High School Fact check: Planetary collisions
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Undergrad Spacetime and effects of being super close to the Sun
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Stargazing Processor power for entry level Astrophotography
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High School Can Non-Rigid Spacesuits Provide Adequate Protection for Space Travel?
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High School Capturing a distant planet's light
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Stargazing GAIA - 1 billion stars and counting
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Graduate Can black holes convert matter/dark matter?
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Undergrad How to determine a planet's size given gravity
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Graduate Exploring the Pauli Exclusion Principle and Black Holes
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High School Why is planet X always depicted as being blue?
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Undergrad How to derive full solar sprectrum from gamma rays
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High School Van Allen Belt "mirror points"-- How do these work?
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Undergrad How can I find journals about this discovery?
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Undergrad Can Gravitational Lensing Be Caused by Refraction?
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High School Do we currently have interstellar com capabilities?
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Undergrad Is there a point during star formation when gas is 1 atm?
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High School Very close asteroid pass in a few hours
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High School How do stars orbit the center of the Milky Way?
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High School Gold Synthesis in Supernovae: What Form Does It Take and Under What Conditions?
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Undergrad How Big is a Planet with a 5000mph Rotation and a 52-Hour Day?
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High School When Did the First Stars in the Universe Form?
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High School What kind of supernova do binary neutron stars produce?
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High School Why Do Stars Show Both Emission and Absorption Spectra?
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Undergrad Calculating distance, object speed, etc - RE:Falcon9
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Undergrad If radiowaves are reflected from objects (i.e planets)....
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Undergrad Is an integral over phase space reasonable?
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High School View Zodiacal Light Before Morning Twilight - Prime Season Now!
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High School Solar Energy at Mars: How Much Can Be Produced?
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High School Can we know what exists in planets' subsurfaces?
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Stargazing The Pleiades: an underrated glory of the night sky
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High School Could dark matter be regular matter?
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Undergrad Hawking Radiation: Explaining the Evaporation Effect
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Stargazing How Does Hubble's Field of View Compare to Amateur Telescopes?
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Undergrad Trying to solve the restricted two-body problem
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Stargazing Kepler Telescope Views Single Point in Space 4.2ly Away
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Undergrad Are Cosmic Rays Intensifying Across the Globe?
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Undergrad Why does hawking radiation in black holes slowly increase?
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Undergrad Moon revolution period 27.32, but got 27.53 from equation?
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Undergrad If the observable universe was visible to the naked eye....
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Undergrad Physical Significance of Eccentricity & Semi-Latus Rectum of Orbital Ellipse
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Undergrad Density of matter in the expanding Universe
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Undergrad "Moment of Inertia" in Virial Theorem
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High School What does a black hole look like from the inside?
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Graduate Change in average atomic mass in universe through time?
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Undergrad What Makes Black Holes Black and White Holes White?
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Undergrad Where is the dead star that created us?
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High School Albedo, atmosphere, and predicted temperature of Venus
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Graduate 1st and 2nd moments of H(mu) function
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Graduate Planar orbit of planets around sun
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High School Is fusion in an accretion disk of a black hole possible?
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High School Do Atoms in Neutron Stars Touch Each Other?
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High School Are colors in astro photos 'real'?
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Undergrad Why do Great Oppositions of Mars Always Happen at the Same Time of Year?
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Undergrad How can inhabitants of moon guess of its revolution
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High School Why Were Planets Visible to Ancient People but Not Us?
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High School Why does the Great Red Spot spin counter-clockwise?
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High School Can the space to have new properties without researching?
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Graduate What Are the Next Greatest Effects on the Moon's Motion?
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Graduate What happens to the red dwarf during a classical nova?
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High School Before Big Bang: Can We See What's Beyond?
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Undergrad Infinity vs Expansion: Is an Infinite Universe Compatible with Expansion?
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Graduate Charge balance in observable universe
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Graduate Synthetic Black Hole Event Horizon Created in UK Laboratory
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Stargazing Will You Be Watching the Perseid Meteor Shower?
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Undergrad The declination at the horizon in the east at a latitude
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Graduate What are the most common programming languages in astro?
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Undergrad How is it possible for a ring singularity?
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High School Understanding the Perseid's Motion in Relation to the Sun
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Undergrad Is Redshift Always Proportional to Velocity?
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High School What Makes the Sun's Gravity Well So Deep Compared to Earth's?
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Undergrad Could Chemistry Occur in Titan's Hydrocarbon Lakes?
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Stargazing What telescope is best for a beginner on a budget?
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High School Is the Milky Way unique or do other galaxies have these voids in their centers?
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High School Is there a such thing as being outside of our sun's gravitat
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Undergrad Is the boundary of a star objective or subjective?
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Undergrad Astronomers make first accurate measurement of oxygen in distant galaxy
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High School Is the Andromeda Galaxy Green Shifted and How is Red Shift Measured in Practice?
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Stargazing Telescope Design: Calculating Total Distance from Primary Mirror to Eyepiece
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Graduate Venus to be humanity's next destination?
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High School Gravitational Orbit: How Size Determines Distance & Speed
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High School The Milky Way's Dark Twin Revealed
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Stargazing What should I observe in Southern Skies during my trip to South Africa?
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High School What Would the Moon's Apparent Magnitude Be 1000 Times Closer?
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Undergrad Focus of Earth's elliptical orbit
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