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.
Graduate Is There an Exact Equation for Transit Time Calculation in Extrasolar Planets?
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Stargazing Build a Powerful Telescope at Home | Tips and Tricks for Optimal Magnification
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Graduate Lunar Space Elevator: Is a Rocketless Trip Possible?
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Graduate Harnessing Comets for Planetary Colonization
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Stargazing What beginner telescope should I buy for under $150?
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Undergrad The Earthly Risk of Rogue Black Holes
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High School How Do You Prevent Telescope Lenses from Fogging Up in Humid Climates?
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NASA Resurrects Mission to Visit Asteroids in 2007
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Undergrad What is the Role of Plasma in Solar Flares?
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Undergrad What is the significance of inverse meters in astronomy calculations?
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High School Traveling at c, how long to the edge of the solar system from earth?
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Graduate Our skewed perception of galaxies
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High School Discover the Maximum Wavelength of M101 Visible to the Naked Eye
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Undergrad Habiting Planets: Is It Possible?
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Undergrad White Dwarf GD 362 - signs of earthlike planets
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High School Can You Hunt for Comets? Understanding the Art of Comet Hunting
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Graduate The spacetime landscape of a black hole
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Undergrad What limits the ability to directly image distant objects with telescopes?
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High School Request: comet projectory calculating tool
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Doomsday Scenarios: What Astronomical Process Poses Greatest Risk?
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Dark matter revealed in video feedback
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Graduate How to Calculate Orbital Approach and Docking in the Presence of a Gravity Well?
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Graduate Is the Fabric of Spacetime a Physical Object?
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High School Suggested Book Recommendations for High School Physics Project
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Graduate Does vacuum energy rely on the existence of matter?
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Graduate What would a black dwarf be like?
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High School Astronomy: Get Started with a Telescope Under £250
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Graduate Solidifying space mirrors in space?
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Graduate Creating a Black Hole: Possible?
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High School Why does planets hav eliptical orbits
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Stargazing Can You Capture Colors on Consecutive Nights with a Telescope?
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Graduate Solving Specific Intensity: A Beginner's Guide
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Graduate Field of Eschatology pertaining to the binary star Wormwood
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High School Planet & Moon Rotation: Questions Answered for 5th Grade Student
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Undergrad Moon Stopping Velocity & Impact Force: How Long Would It Take?
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Graduate Gravitational Lensing and Frequency-Dependent Light Travel Time
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High School Toys in Space: Designing for Astronauts
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Graduate How long would we live without the sun
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Graduate Do Non-Rotating Neutron Stars Exist?
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Undergrad Problem with the theories about the Sun and the planets
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Graduate Is the Universe Drawn to a Cosmic Black Hole for a New Beginning?
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Undergrad How does the moon's gravity affect the orbit of the ISS?
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Undergrad Is Primary Focus Magnification the Same as Focal Distance Equivalent in Optics?
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Graduate Have some ideas looking for feedback
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Stargazing I Am Cursed Ack Fi My New Telescope hates me
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Graduate Sharper than Hubble, from the ground.
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Graduate Can Planets Be Entirely Liquid and Still Viable in Space?
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Only 1 hour to the Aurigids meteor shower (storm?)
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Where Can I Find a Map of Our Galaxy?
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Graduate Apparent contradiction with orbital mechanics
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High School Say Hi to Space in 24 Hours: Hover in a Helicopter
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Stargazing Did You Know the Moon Dances for Us Every Month?
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Stargazing Are You Prepared for the Upcoming Lunar Eclipse?
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High School Will Mars Really Look as Big as the Moon on August 27, 2007?
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Undergrad Question: Mass distribution in galaxies
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High School The Fascinating Truth About the Moon's Monthly Orbit Around the Earth
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Graduate Hawking Radiation: Does an Astronaut Ever Cross the Horizon?
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Graduate The Sun's Final Form: Radius, Mass & Composition
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Graduate What Causes Symbiotic Novae to Re-Explode?
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Graduate How do intense magnetic fields cause photons to split or merge?
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Graduate Could a collision cause Venus to rotate prograde?
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Stargazing Which Telescope Should I Buy for Astrophotography and Viewing?
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Graduate Supermassive blackholes and galaxy formation.
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High School Examining the Accuracy of "Moon's Orbit Around Earth"
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Graduate Why Does the Sun's Surface Gravity Seem So Low Compared to Expectations?
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High School What is the Astonishing Tail of Star Mira Discovered by NASA?
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Undergrad Gamma Ray Bursts: Nature & Why they Last 2 Seconds
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High School Is the Sun an Ordinary or Atypical Star?
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High School How Stars are Formed - Astronomy Basics
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Stargazing What can I get to improve telescope
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Undergrad Spacetravel: t as a function of a and d
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Stargazing Liquid Mirror Telescope: How to create a parabolic shape
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Graduate What Are Gravity, Dark Matter, and Atoms?
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Graduate What Are Some Recommended Graduate Level Texts on Stellar Spectroscopy?
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Undergrad Gravitational Waves: Origin & Mass Impact
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Undergrad Question re: Planets Facing Each Other
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Graduate Let's try something-let me know if you have difficulty
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Graduate A white dwarf formed by a supernova, possible?
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Undergrad How Can You Calculate the Area of Light Hitting a Dome?
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Graduate When was the last time all inner planets aligned in our solar system?
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Undergrad Moon's Escape Point: Beyond Earth's Gravity
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Undergrad Water found on distant planet (hot Jupiter at 63 LY)
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Graduate Using JPL Horizons to Obtain Inertial Positions and Velocities: A Tutorial
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Undergrad What is the accepted diameter of the universe?
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Do you unfriend people on Facebook/Myspace?
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Undergrad Black Hole Radius: Facts & Theory
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Undergrad Does the Saros Cycle Provide Accurate Eclipse Predictions Across Time?
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Graduate Model a Cooling Sphere: Finding Resources
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Graduate Will cosmic microwave background disappear?
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What is the empty space in an unopened 2 liter bottle of soda?
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Stargazing Great Canary Telescope - First Light
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High School UFO-Inspired Future Spacecraft: Faster Than Mach 4?
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Graduate Selecting a Recent Space/Astro Physics Research Topic
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Explore the Universe with Galaxy Zoo
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Undergrad Question regarding sun/moon angle
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Graduate The Mystery of Aurora Borealis: Electron Acceleration
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High School What can I see with my Sky Watcher telescope?
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How to find any naked-eye object
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Undergrad Understanding the Expansion of the Universe Through Low Mass Star Death
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Graduate Simulating the gravitational interaction between two material points
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