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.
Stargazing Why Can't I See Anything Through My Newtonian Reflector Telescope?
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High School Calculating distances with an elliptical orbit
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Undergrad What is the size of the observable universe relative to CMBR
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Graduate Trapping the sun in a perfect insulator
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High School What is the maximum lifespan of a B-class blue giant star?
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Graduate On a Clear Day, at 6 ft tall, at the waters edge ....
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Undergrad Calculating semi-major axis and minimum mass of an exoplanet
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High School Kepler's Laws of planetary motion
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Undergrad What Does MUV Mean in Astronomy? Understanding GN-z11 and its Redshift
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Undergrad How does mars have a magnetic field, with a cooled core?
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Undergrad The "real" reason why some galaxies are flat
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Undergrad How Many Einstein Rings Have Been Discovered?
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High School What Are Love Numbers and How Do They Impact Tidal Deformations?
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High School Jupiter Red Spot Position and more
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Undergrad Light speed moving objects -- What would it look like?
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Undergrad Is the Oort Cloud Just Speculation or a Real Cosmic Structure?
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Undergrad Superconductors and spacetime question
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Undergrad Hubble finds universe may be expanding faster than expected
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High School Equatorial platform: any experiences?
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High School Does the moon rotate on its axis?
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High School Are the axes of celestial objects parallel in a galaxy?
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High School Are Larger Black Holes Less Dense Than Smaller Ones?
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High School Is the formation of galaxy groups explained correctly here?
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Undergrad How does the solar wind affect Earth's atmosphere?
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Undergrad What happens when tidal power runs out?
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Stargazing What is the difference between a type IIP and type IIL supernova?
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Undergrad GW150914 and GW150914-GBM revisited
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Stargazing A new and improved Eta Carina image
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Undergrad Is tangential velocity in elliptical orbits stable?
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Graduate Having Trouble with ISIS Image Subtraction Method?
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High School Walking on a sheet of grippy fabric in space.
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Undergrad Closure Phase - Interferometry - Recurrence Relation
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High School Mass in Space: Questions & Answers
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Graduate Climate change and changes in astronomical viewing conditions....
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High School CCD: How It Works & Intuitive Explanation
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High School Chemical composition of relativistic neutron star jets?
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Graduate Mass/Energy of Relativistic Jets?
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Graduate How Much Mass Is Ejected in Polar Jets?
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High School Detecting Unusual Stellar Shapes: Looking for Perturbed Planets
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Stargazing New Large Sunspot coming into view
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Undergrad Aurora on Uranus? Why Are They In Large Dots?
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Graduate Is Solar Wind Formed by Planetary Resonance and Solar Cycles?
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Undergrad See How Andromeda Would Look if It Were Brighter
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High School Shouldn't dwarf planets be a subset of planets?
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High School Why are we still limited in our Moon exploration ambitions?
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High School Why does the moon appear to rock back and forth in the sky?
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Undergrad Position and Velocity in Heliocentric Ecliptic Coordinates
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Graduate Two Black Holes' collision thought experiment
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Undergrad Understanding Etherington's reciprocity theorem
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High School Are galaxies part of constellations?
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Undergrad Mathematical Proof of Kepler's First Law of Orbits
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Graduate Viewpoint: Black Holes Produce Complexity Fastest
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Undergrad How to calculate day length of a tidelocked double planet?
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High School Why doesn't the Moon get pulled into the Earth?
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High School How Much Should You Spend on a Moon Filter?
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Undergrad Pluto's interaction with solar wind
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Stargazing Large Sunspot Visible: See it Now for 3-4 Days - 13 Apr 2016
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Graduate Will this setup work for backyard photometry?
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Undergrad The universe doesn't have volume from outside?
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Undergrad New light shed on birth of the universe
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Kid Didn't Discover Lost Mayan City via Astronomy After All
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Undergrad How Will Nano Spacecraft Reach Alpha Centauri?
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Undergrad Space Debris: Questions from a Newbie
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Undergrad Discovery of how to measure wavelength absorption lines
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Undergrad How Small Can a Mass Be Squeezed?
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High School What are the name and function of this apparatus
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High School What do you call rocks that don't orbit the sun?
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Graduate Is there proof that black holes really exist?
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Stargazing Did You Catch These Amazing Stargazing Moments This Weekend?
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High School What are the biggest misconceptions about black holes?
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High School "Without Earth's atmosphere, cosmic rays would be lethal"
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High School Calculating Orbital Velocity in 2D
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High School Kepler Telescope Running in Safe Mode
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Undergrad Gravity assist and increasing orbital energy
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High School Did Stars Precede Life in the Universe?
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High School Gravitational Collapse: Internal Energy & Potential Energy
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Undergrad Could it be so easy? (Why is space three-dimensional?)
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High School Potential Organism Sustaining Planets
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Undergrad Where Can I Compare Star Spectra?
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High School How to contain an atmosphere in space?
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High School Does a magnetic field accompany Jupiter's Great Red Spot?
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Undergrad Evidence to support the theory of stellar nucleosynthesis?
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Undergrad Hawking radiation and energy-negative energy pair production
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Undergrad Comparing Earth's diameter with Moon's diameter
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Undergrad Star Radius & Mass from Spectral Class, B-V, Luminosity
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Undergrad How can I calculate red shift for intragalactic bodies
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High School How Can I Improve Pointing and Eyepiece Quality on My Dobsonian Telescope?
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High School How much of the visible universe have we explored?
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Graduate April 23rd Magnetosphere Anomaly
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High School Is the Big Bang a Result of a Spontaneous Singularity?
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Graduate Mars as Second Earth: Slowing Down Its Orbit
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Undergrad Could "reverse entropy stars" exist in our universe?
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Undergrad Does Space Compressibility Affect the Big Bang?
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High School What is the source of the mysterious red rectangle in space?
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Undergrad Meteor impact and axial tilt, relation to climate
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High School Universe Expansion: Is Earth Spinning Away From Sun?
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High School Fermi Paradox: What are your opinions on the Fermi Paradox?
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High School I've done it the wrong way roundn
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High School Is Earth's Movement Away from the Sun Impacting Global Warming?
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Undergrad What does cosmological redshift do to light
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