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 Space Boundaries: Is There Such a Thing?
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Undergrad How is it that the sun affects our tides?
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Undergrad Can a Planet Leave Its Orbit Without External Forces?
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Undergrad Does Einstein's Theory of Relativity Predict Dark Matter?
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Undergrad Do massive objects in space act as gyroscopes?
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Undergrad Gravity in Planets & Stars: Investigating Middle
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Undergrad How fast are the projectiles from a supernova?
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Undergrad Question about falling bodies in orbit and acceleration
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Undergrad Maintaining Orbit of Two Planets Around Sun: Is it Possible?
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Undergrad Meteorite Heating: Friction or Compression?
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Undergrad Is the Sun’s position in the Galaxy close to its predecessor’s position?
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Undergrad Why is maximum orbital acceleration greatest at periapsis?
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Undergrad Why is the ideal gas law a good approximation for stars?
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Undergrad Where did the moon get its orbiting energy?
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Undergrad Searching for an Official Database of Solar System Properties
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Undergrad What is the Semi-Major Axis of Saturn's 10-Year Orbit?
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Undergrad Space expansion in our perspective?
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Undergrad Understanding Phase Space and Building It
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Undergrad Longest day of year in the tropics
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Undergrad Will Betelgeuse Go Supernova Soon?
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Undergrad 'Close Encounters' and Galaxy formation
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Undergrad In wich economic model this are more advanced: Space Exploration and Science.
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Undergrad Earth's Departure from the Solar System: Impact on Planetary Orbits
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Undergrad Is there such a thing as lumens/m^3?Would you have to be measuring
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Undergrad Finding the equilibrium bwetween two celestial bodies
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Undergrad What is a 'Gravitational Slingshot'?
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Undergrad How does the three-body system (Earth, moon, Sun) work?
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Undergrad Gravitational Disc consequence ?
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Undergrad What Is the Longest Wavelength We Can Observe in Radio Astronomy?
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Undergrad How does inflation explain the rapid expansion of the universe?
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Undergrad Why Haven't We Sent a Probe Into Jupiter's Depths?
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Undergrad Can the Sun be treated as a black body radiator?
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Undergrad Space Weather reports possibility of Hyder Flare that will hit the earth
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Undergrad Why do neutron stars suck the gas from their companions?
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Undergrad Potential for Gamma Ray Bursts to Pose a Threat to Earth?
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Undergrad Finding Distance to Sirius Using Parallax Method
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Undergrad Why Don't Stars Expand with Space?
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Undergrad Understanding Hyperbolic & Parabolic Trajectories
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Undergrad If we could see 13.7 Billion lyears away?
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Undergrad Black Holes & White Holes - Theoretical Plausibility?
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Undergrad What Determines the Differences in Life Across Different Planets?
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Undergrad Terminology: Dwarf Planet vs. ProtoPlanet
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Undergrad Is there a term for the vertical elongation of a planet?
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Undergrad Black Holes emitting jets of gas?
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Undergrad What Would Happen if a Gamma Ray Burst Hit Our Sun?
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Undergrad Ice Discovered on 24 Themis Asteroid
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Undergrad Jupiter-sized Planet Lurking in Oort Cloud?
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Undergrad Is the solar brightness dependant on how many solarspots
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Undergrad Why Are We Trying to Reach Galaxies Drifting Apart at Light Speed?
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Undergrad How to Determine Right Ascension and Declination from Keplerian Elements?
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Undergrad Need Help Answering Astronomy Questions? Download the PDF!
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Undergrad Can the force of gravity from a Black Hole be escaped?
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Undergrad What Are Cosmic Waves and Their Impact on Earth?
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Undergrad Planet Rotation: How Is It Possible?
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Undergrad Astronomical data in an Ephemeris
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Undergrad Being shot by a bullet in space. Damaging? Why/why not?
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Undergrad How does one describe the energy of space to the public?
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Undergrad Forming a Star: What Drives Gas & Dust Clusters?
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Undergrad Parabola for 18 aluminum mirror
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Undergrad Unveiling the Fascinating Drake Equation and its Fame
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Undergrad Canis Major dwarf galaxy *thought* to be our closest neighbor?
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Undergrad What is the proportionality constant for the Sun's gravitational force?
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Undergrad Meteor Trajectory: Can it Fall Straight Down?
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Undergrad Average distance form earth=384,403,000 meters
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Undergrad Big Bang: Has Universe Always Been Expanding?
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Undergrad What Makes Living in a Spaceship Without Gravity So Unique?
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Undergrad Mathematics & Astrophysics: Importance & Overview
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Undergrad Accuracy of the exploding asteroids in The Empire Strikes Back movie
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Undergrad How do I map a celestial object's declination ?
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Undergrad How Far from a Gamma Ray Burst to Match Solar Radiation at Earth?
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Undergrad Galactic Center Wobble: A Look at the Dynamics
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Undergrad Food for thought, is law of inertia wronghum
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Undergrad Earth's Axis: What is Figure Axis & Have Astronomers Had to Readjust?
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Undergrad What drives the magnetic field of Earth and how does gravity play a role?
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Undergrad Can the Sun Appear to Revolve Around the Earth from Certain Points in Space?
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Undergrad Stars: Fixed or Moving? | RA, Dec & Julian Date
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Undergrad Where does the energy of gravity come from?
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Undergrad Could an ExoEarth with 70% Land and 30% Water Host Unique Life Forms?
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Undergrad Reference book about astrophysics please
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Undergrad Reccomend a stellar database for my software program?
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Undergrad The densest areas in the universe
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Undergrad Why Doesn't Earth Fall Into the Sun?
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Undergrad What are Black Holes and How Do They Differ from Dense Balls of Matter?
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Undergrad Changing Earth's Orbit: How Has the Speed Around the Sun Evolved?
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Undergrad Need Controversial Topic for an Eng102 Class
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Undergrad Calculate the final velocity of an object accelerating towards a mass
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Undergrad Exploring Kinetic Energy & Recessional Velocity
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Undergrad Build Space Dirigibles: Alternative Freighter Idea
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Undergrad Variation of gravity along latitude
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Undergrad Will we go the the past if we could go faster than speed of light?
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Undergrad Hawking Radiation: Rate of Decay & Mass
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Undergrad Expansion Algorithm: Acceleration Over Time
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Undergrad An asteroid is orbiting around the sun at a distance of 4.2
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Undergrad Difference between hot and warm pixels?
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Undergrad Learn Astrophysics: Self-Study Tutorials & References
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Undergrad Why do black bodies emit light at all wavelengths when heated?
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Undergrad Confirming Solar Wind & X-Ray Flux Effects on Earth's Magnetic Field
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Undergrad Will Converting Mass to Energy Affect the Universe's Temperature?
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Undergrad The Possibility of "Pure" Planets
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Undergrad Should the Drake Equation Consider Moons?
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