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Help with a novel: uses of a time gradient?
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Can closed wing aircraft take off as hydrofoil
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Speed, acceleration, distance, time question
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Is this idea remotely possible in the distant future?
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Logistics of Lasers as Weapons in SF
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How to change the earth's atmosphere to chlorine based?
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World-building for fantasy story
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Planet w/ various atmospheres/colors/suns?
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Feasibility of hiding a colony within NGC 6543.
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How can we protect against laser weapons in future warfare?
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Exploring Energy Shields in Star Wars Fiction
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Step towards a brave new world
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We colonize an Earth-like planet with 2 million people....
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Habitable zone for binary star systems
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The Bible -- no, the other one....
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Complex Genetics: 15 Possible Alleles for Height Priority
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Weakness of Death Star: A Space Opera Scenario
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Breaking through Kain, the legacy of Kain vampire
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Ground effect for blended wing body turboprop planes
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Best planetary composition for flight
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Telescope probes and warp track
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How to quickly survey an exoplanet before colonization?
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Realistic help for a fictional plan?
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Can you "condense" a magnetic field and use a precision magnetic "beam" for space travel?
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Physics-Friendly Super-Speedster
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Perception of other dimensions
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Can a Dilution Refrigerator Be Used as a Murder Weapon in a Crime Novel?
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Writing fiction, steam power, hydrogen internal combustion engine
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I want to pour a Sol sized bucked of water on the sun
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Overpowered technology and Murphy's law
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Advice needed about rocket performances
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Killing Earth with a cosmic flashlight
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Designing a Fantasy World - physics advice needed
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Dense exoplanet atmosphere, choice zeppelin vs. plane
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Girl Hit Wall with 110 lbs Force After "Falling" Sideways
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Could You Avoid Objects Traveling at Near Speed of Light?
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Is Reflective Fiction a Potential Problem for Starships at High Speeds?
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Planet with dense neon atmosphere and streams of CO2
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Could an Exomoon Survive Permenant Shade from a Gas Giant?
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Split someone into Subatomic Particles?
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Lightning/electricity question
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Will a Jerrycan with oil sink?
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Magnetosphere and space dust problems
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Designing Spacecraft for Hard SF Battles & Piracy
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Interstellar Travel: Exploring Nearby Stars with Advanced Technology
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Dyson slingshot & Neutron stars
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How to get really deep depresion on an exoplanet?
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Ocean in the Sky: Exploring a Hypothetical Scenario
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Brand New Elements in the Same Old Universe
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Properties of a supernatural element?
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A Space Ship with 3 main power sources
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Physically plausible explanation for artificial supernova
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Theoretically, how much energy would it take for a wormhole
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Can black hole be used in hardish science story?
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Designing an environment inside the ice crust of an exomoon
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Black Hole Question #8,452,123
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Massless particles that can generate forces?
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Graviton Drive: Is this plausible?
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What would happen if the Moon blew up?
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Flashover: A hard sci-fi novel I'm working on
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I need to build a planet. Care to help?
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Space Opera: Advantages/Disadvantages of Amphibian Pilots
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Can a Chaotic Three-Body System Save a Planet from Destruction?
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Help with orbital mechanics for an unusual alien planet
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Outcome of remaking the superforce ?
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MONIAC Computer Programming Company
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Schrödinger's Cat: A Thought Experiment on Quantum Mechanics
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Let's make a list of plausible, habitable exomoons/planets
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Oxygen atmosphere without ozone layer
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Could the Offspring of a Human and Shape Shifter Possess Shifting Abilities?
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Part of the starting of my sci-fi stories
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Hypothetical Scenario: Planet with Two Moons
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Looking for help with a Ring World Model
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Exploring Planet Year: Ideal Distance and Star Type for a Habitable 2-Year Orbit
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Historical time and place paradox
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How to interstellar travel in a very hard SF universe
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Tech Support needed for Spaceship
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How would Earth's atmosphere change in the absence of life?
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What size could habitable planets in the Castor system be?
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Questions about moons of the solar system
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Building a City on New Earth: A Couple's Story
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RP Device: How to Create Water in a Serenity Game - A Firefly Universe Solution
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Close to Light Speed: Exploring a Wormhole Drive Concept
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Assistance needed with sci fi novel
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Standard Sci-Fi Battles Using Fluid as the Medium?
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Questions for a Near-Future story
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How small population can maintain contemporary technology level
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Eye of Moon: Planet Orbiting a Double Star
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An asteroid is approaching Earth
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Question regarding negative atomic numbers.
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Difficult question Dark energy
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Habitable Binary Worlds, and their characteristics
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Relativistic effects of a low orbit around supermassive objects
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Help w/ Wormholes (Neg.Mass & Subatomic particles)
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Find a Fatal Disease for 25 Year Olds with Environmental Causes
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Breaking the Laws of Physics: The Possibilities of Teleportation
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Humanoids with Segmented Skeletons?
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Science fictiony questions about spacetime curvature
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Implosion grenades: do they exist?
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Your choice of least facepalm-able space travel mechanism
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18
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