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 Detect exoplanets by yourself with the cheapest equipment
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Undergrad Is the universe spherical and shaped like a bubble or is it flat?
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Undergrad Mathematical Proof of Elliptical Orbits
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High School Exploring the Rare Earth & Gaian Bottleneck Hypotheses & the Drake Equation
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High School Bose Stars (dark matter in origin)
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High School Earth's orbit around the sun -- looking for an equation
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High School Can the moon orbit be used as perpetual motion?
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Undergrad Can I Simulate Planetary Accretion with Disksim?
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Undergrad NGC7741 Imaging: Should I Stack Images Through IRAF?
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Undergrad Creating a Dark Matter Black Hole: How it Differs from Ordinary Black Holes
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Undergrad Dark Matter Gas Theory: Explanation & Bullet Cluster
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Undergrad Solar Spectrum: Continuous & Absorption Confusion
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High School Formation of Hyperion System: How Planets Form Far from Stars
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Undergrad Resources to find Data/Models for Nonradial Pulsations of Va
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Graduate Falsifications and constraints due to GW measurements
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Undergrad General Q: How do you measure a Galaxy's distance?
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High School Can Modified Newtonian Dynamics Explain Dark Matter?
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Undergrad All current 'hints' towards Dark matter not being "matter"
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Undergrad C# Accurate Earth, Moon Sun visual model to predict eclipses
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High School How much of a star undergoes fusion?
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Graduate Estimating Displacement of Uranus Due to Neptune's Gravity
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Undergrad Calculating Earth's Orientation and Moon's Position at J2000.0
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Graduate What is the dust-to-gas ratio in oxygen-poor galaxies?
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Undergrad Computing a value of radius for a typical white dwarf
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Undergrad Gravitational waves and the multiverse
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Undergrad Red Dwarfs: Is 100% Hydrogen Conversion Practically True?
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Undergrad Understanding Astronomical Days & Measuring a Year's Length
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Undergrad Is Dark Matter Challenging Our Understanding of the Universe?
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Undergrad What is the relationship between Julian Days and other observable time periods?
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Undergrad The Shape of Very Massive Stars: Spheres or Something Else?
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Undergrad Gravity vs Entropy: Reconciling Two Opposing Trends
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Undergrad Is a trip to explore the Alpha Centuri system actually feasible?
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High School How does the Sun's magnetic field affect Earth's geomagnetic field?
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High School Space is Discrete? Argument Explored
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Stargazing Is there any material I can use for an aperture solar filter?
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Undergrad What could cause a discrepancy in the Bias of a CCD
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High School Why is the gravity of a neutron star stronger than that of its original star?
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Undergrad Accelerating universe explained by constant expansion?
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High School Black Holes -- What methods to use to find them?
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Undergrad Find Trajectory from A to B: Approaches & Solutions
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High School Why don't man-made satellites drift away from the Earth?
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High School Feasibility of a L1 Gravity Swing Cold Launch?
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Graduate Integrating partial derivatives in a field equation
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Undergrad Why does Mars have so much iron on it's surface?
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Undergrad Is a Topopolis' Orbit Truly Unstable?
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High School Uranus and/or Neptune Lab ideas
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High School The geometry of the expansion of space
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High School High School Astro Club: Teaching Astronomy in a City
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Undergrad Variations in the speed of sound in a star
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High School Is right ascension only measured once a year?
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Undergrad Is there some prediction of the speed of rings?
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Undergrad How to get state vector in 4-observation method of Gauss
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Undergrad Why Do Astrophysicists Use νLν in Accretion Disk Emission Studies?
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Undergrad Neutron Stars mass and radii observation data
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Undergrad 55x times harder to get to the Sun?
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High School The accelerating expansion of the universe
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Undergrad How was the value of the permittivity of free space determined?
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Stargazing Space Station Live Video of the Earth
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Graduate 3-star triangular orbit possible?
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Undergrad Exploring Planetary Orbits and the Sun's Rotation
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Undergrad Question about orbits and Kepler's problem
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Undergrad Why don't red dwarf stars emit white light like the Sun?
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Undergrad Synchronous Orbits: Why Does 3:5 Jupiter/Saturn Happen?
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High School An observer looking at Earth's past history
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Undergrad Is the Sun a Perfect Black Body? Investigating the Reflection of Radiation
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High School Brown Dwarf Mass Gain: Does Radius Increase?
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High School Thank you for understanding. Have a great day!
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High School Are Deep Space Objects Still There?
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Undergrad Radial dependence of the Sun's magnetic field
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Undergrad Would going to the Moon delay going to Mars?
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High School Are all wavelengths of light possible?
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Undergrad Will Space Expansion Lead to the Formation of Black Holes and Neutron Stars?
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Insights Either the Sun Is Getting Smaller or Gravity Is Getting Weaker
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Undergrad What problems would 'black holes' not being formed solve?
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Undergrad If all of spacetime was created with the Big Bang....
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Undergrad Why are there so many different kinds of stars?
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High School What Secrets Does the Color of Space Hold and How Does Space Travel Work?
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High School What can be used to propel something in space without fuel?
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Graduate Penrose: CCC predicts BICEP2 B-modes due to void magnetic fields, correlated to CMB Hawking Points
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Undergrad Is There a Model to Define Earth's Position in the Milky Way?
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Graduate Phase Space and Its Use in Monte Carlo Simulations of Radiation Beams
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Stargazing Phase of radio waves received by a radio telescope dish
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High School Why don't high mass stars expand and cool?
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High School Why will Betelgeuse go supernova?
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High School Mars Water: The Truth Behind Its Blue Color and Recent Discovery Revealed
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Undergrad Would Newton's shell theorem prevent binary planet systems?
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High School Planet Nine race, how is it going?
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Graduate Multiverse theory with impossible universes?
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High School Eta Carinae Is Farther Than You Thought: 8,500 Light-Years
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Undergrad A discussion on "officially called a planet"
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Graduate Why Does the Core of Certain Chromospheric Lines Appear in Emission in Sunspots?
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Undergrad Harmonic Convergence of Major Planets: Exploring the Solar System Barycenter
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High School How Do You Determine the Sun's Coordinates?
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High School A Question Concerning Lunar Eclipses and Aristarchus's Work
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Stargazing The Moon through my El Crapo Telescope
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Undergrad Least cost to get a self-sustaining space infrastructure
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High School Neutron Star Collisions: Creation of Heavy Elements and Their Fate
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Undergrad Could entropy remain the same overall?
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Undergrad Do orbital dynamics scale linearly?
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Undergrad Why does the expanding universe redshift light?
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