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 Galaxies that can be seen with the naked eye
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Undergrad Dark Matter: What Is It & How Was It Formed?
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Undergrad If a comet kicks the moon out of its orbit and away from earth
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Advanced Astronomy/Cosmology Forum - Get Answers to Your Questions
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Undergrad The Pioneer Anomaly: Examining Velocity Gained through Gravity Assist Manoeuvres
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Graduate Intuitive explanation of the gravity of a sphere
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Graduate Angle of the Sun above orbit plane on satellite-centered celestial sphere
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Magnetic Field of the Sun will Flip
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Graduate Do black holes repel the weak force?
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Graduate Is there any updated study on the Moon's orbital plane anomaly?
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Graduate Can galaxy clusters rotate like individual galaxies?
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Graduate How empty are the voids in the universe?
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Graduate The Flyby Anomaly: Ranging Data, Transverse Doppler Effect
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Graduate Least massive earth like planet possible in the habitable zone?
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Graduate What Are the Inclinations of Planetary Orbits Relative to the Sun's Equator?
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Graduate Capturing an asteroid in Earth orbit
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High School Are All the Stars We See Actually Dead?
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High School View 65 Million Years of Time - Time-Travel Viewer
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Undergrad The Mystery of WASP-18b: Uncovering the Mass and Rotation of Its Mother Star
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Graduate Another expanding universe question
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High School The Reality of Majoring in Astrophysics: Is it Worth It?
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Undergrad What Holds People on Earth if Gravity is the Spacetime Fabric?
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Undergrad Moon-Earth distances and interactions
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Graduate Dark Energy, Expansion, and Acceleration.
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Graduate Black Holes: Viable Scientific Theory? Or Voo-Doo Science?
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If there is topic Is Our Universe Flat poin me.
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High School Would We Feel Heat Loss If All Stars Except the Sun Went Out?
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Undergrad Why Are Orbits Elliptical? Rules of Circular Motion
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Graduate Calculating Moon Coordinates During Solar Eclipse of August 11, 1999
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Graduate Warping Space in a Craft: Gravity or Conventional Energy?
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Undergrad Can a Telescope See Itself from 100km Above Earth?
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High School What is the Case History of Discovering the Speed of Light?
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High School Why Do Jupiter's Moons Orbit in a Plane?
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Graduate How fast do I have to go to get away from an explosion in space
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Graduate Orbital Effects of a Significant Mass Increase
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Graduate [Advice Needed:] Research in Astronomy/Astrophysics/Cosomology
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Undergrad Solving Brightness Equation with Procyon: 7L☉ and 11.41 light years
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Graduate How do you define at rest in the Universe?
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Graduate What Happens to Accreting Brown Dwarfs in the Galaxy?
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High School What does Newton's universal constant mean and how is it used?
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Graduate Escape Velocity and Earth's Gravity
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Graduate How Can a Single Radio Telescope Distinguish Between Point and Extended Sources?
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Graduate Is there something strange with the gravity during total solar eclipses?
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Undergrad Light Speed in Vacuum: What's the Significance?
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High School Green lasers: how much power is too much?
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Autostar Systems: Efficiency of Current Auto-Star Systems
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Undergrad Why Isn't a Collapsed Star a Black Ball?
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Undergrad What are the types of waves that can travel through space?
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Graduate Calculating Black Hole Matter Absorption and Its Impact on the Universe
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Stargazing Is the Giant Magellan Telescope set to revolutionize ground-based astronomy?
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Undergrad Why can't light escape a black hole?
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High School I can't understand why the sun moves across the ecliptic
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High School New Telescope Buyer Seeking Expert Advice
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Graduate Are There Alternative Theories to Explain Redshift and Universal Expansion?
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Graduate Time technically stops after the event horizon correct?
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Graduate What Life would see around other Stars
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Undergrad Black holes and conversation of energy
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Undergrad Can Solar Storms Render All Electronics Useless?
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Graduate Cooling of Neutron Stars and Urca-process
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Undergrad Why is the moon drifting into space
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Undergrad Joining two orbiting space vehicles
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Undergrad Spectra Classification: Finding Sources for Stellar Objects
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Graduate Are galaxies of antimatter identifiable?
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Graduate Black Holes vs. Dark Energy: Who Holds More Power?
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Graduate Black holes, white holes, and time
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Undergrad Is There a Center of Mass to the Universe?
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Graduate What is the significance of the Cauchy horizon?
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High School Anchor a tube on earth and slope it all the way into space
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Graduate Could Black Holes Be Portals to Other Universes?
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Graduate Expected sound of colliding black holes
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Undergrad Difference between a red/blue shifted object and one in rest.
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High School What is the composition of a gas giant's atmosphere?
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Graduate Is the physics within the Solar system really understood?
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Graduate What Units Should I Use to Calculate Planetary Orbit Time?
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High School Can You Move a Spaceship By Running and Jumping In It?
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High School Is the moon closer or further away to us than predicted by Newton
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Undergrad Does Light Slow Down During Long-Distance Space Travel?
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Undergrad What is the relation between redshift and absorption lines in galaxies?
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Graduate Would anything survive our sun's eventual nova?
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High School Are there any objects between Mercury and the Sun?
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Graduate Neutron stars and blue/red shifting
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High School Viewing Earth from the Moon - Would it Stay in One Spot?
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Stargazing Learning How to Use a Telescope on Your Own: Advice and Suggestions
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Undergrad Energy time relationship from an observer in space
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High School Has Jupiter Been Bombarded by Another Object?
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Stargazing How do space telescopes detect non-visible light?
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Graduate Is There an Upper Limit to Planetary Core Density?
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Graduate Proof of planetesimals for asteroid belt?
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Graduate What happens when an anitmatter blackhole collides with a matter blackhole?
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Graduate Calculating Distance to Cefeide Star w/ Stellar Extinction
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Undergrad Hawking Radiation: How Do Black Holes Emit?
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Graduate Question: How does gravity affect the speed of light in a black hole?
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ISS Toolbag visible with the naked eye now
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Undergrad Why Don't Heavier Elements Sink to the Sun's Core?
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Stargazing Gravity anomaly during solar eclipse.
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Undergrad The Expanding Universe: Understanding Hubble's Law
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Graduate How likely is a super solar flare?
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Undergrad Difference between Thermal and Kinetic Energy
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Graduate Is Dark Matter Just a Reflection of Our Flawed Theories?
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Undergrad How to find the position of a star in the sky
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