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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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How Can a Planet Achieve a 2-Year Orbit in a Habitable Zone?
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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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How Can a Water Generator Work in a Firefly Serenity Game?
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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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An asteroid is approaching Earth
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Can a Dilution Refrigerator Be Used as a Murder Weapon in a Crime Novel?
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Question regarding negative atomic numbers.
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Is Dark Energy the Candle Burning at Both Ends in Sci-Fi Universes?
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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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Static moon question for a book
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Lasers, robotics, is that only the beginning, or not?
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Social changes caused by high level of surveilance
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What should I name my teenage sci-fi heroine?
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Large-Scale Wave Amplification - Is it plausible?
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Can a Mercury sized moon support an atmosphere?
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Worldbuilding idea - the edge of survivability
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Earth-like Sun-Synchronous Planet?
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Can Quantum Foam Really be Used for Data Storage?
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Can long exposure techniques be used to capture detailed images of planets?
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Writing a book and I need some facts if you'd be so kind.
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What Properties Does Matter Need to Create Wormholes?
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What would happen if a character could split atoms with their mind in a novel?
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Questions about inhabited moons (or at least one)
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Fossil energy sources on a young Earth-like planet
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Nukes on the Moon - visible from Earth?
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Exploring the Physics of Epic Space Battles
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Maths regarding the dimensions of a force field.
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Obstacles for Life in the Degenerate Era
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Transitioning from the Stelliferous Era to the Degenerate Era
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Is Eden Chronicles: Time to Wake Up the Start of a New Sci-Fi Epic?
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How Can a Superpowered Character Control Their Abilities to Avoid Catastrophe?
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Could Ballistic Space Probes Revolutionize Space Exploration?
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What Equipment and Technology is Needed for Negative Energy Research in Fiction?
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Rolling a space plane in the absence of gravity
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Future Naming Scheme for Planets and Systems in Our Evolving Universe
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Powerful Telescope Needed to See Moon's Roadway?
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N Body Problem (?) - Solar System Complexities
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Can a Nuclear Device Ignite Jupiter's Atmosphere?
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Plausible cosmic event that could annihilate the earth
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Could Humans Survive Falling into Artificial Gravity Wells in Space?
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Planatary habitation, red dwarfs
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It flies Writing a superhero story
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Your assignment: Design a post-apocalyptic communication system
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Star mass/luminosity for a given HZ
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BB moving at 0.01% the speed of light
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A biological weapon which drains moisture from flora and fauna?
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Request for comments about over-complication when writing sci-fi
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A question on centrifugal artifical gravity
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RFC: The believability of a sci-fi concept: Gravity is an element of e
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Is mind communication the key to preventing disaster in time travel?
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Need verification of physics phrase for novel
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I need feedback on a story I wrote
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Slowing a Rogue Iron Asteroid: Can it Survive 900 Gees of De-Acceleration?
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Can Evolved State: Dichotomy Capture Your Imagination?
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What Happens If a Craft Travels Through a Wormhole and Collides with a Planet?
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Exploring the Possibilities of Entanglement Communication in Sci-Fi Story
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4+ spatial dimensions and how to manage them
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Speculative Question about Pure Fusion
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SF Writer's Speculative question on Space Combat
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What type of life could appear on this world
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Star-hopping a way home for a superman; astronomers needed
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How Did the Lumberjanko Use Hollywoodipedia to Solve His Bean Container Dilemma?
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Could a moon orbiting a water-giant planet look like earth?
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Looking For Help With A SciFi Movie For Accurate Physics
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Unraveling the Mystery of Harry Stephen Keeler's Webwork Plots
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Survivable change to the earth’s orbit
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Eye of Moon: Planet Orbiting a Double Star
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Jestilla Atilla's Journey Through the Warp: A Warhammer 40k Tale
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Writing: Input Wanted Warp Drive System: Could Powerful Lasers Reach Warp Speed?
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Writing: Input Wanted Future travel with the tachyon field
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What are the potential uses and properties of gravitons in quantum theory?
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What happened to the respectful discussions in physics?
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Space ships turning+time dilation
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Orbital Mechanics Question - Speculative
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Possible different paths for evolution
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Call for examples of 'coincidences' in physics
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Check my work please: Jupiter as power station?
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Scifi Author Needs Answer to Question
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Science fiction inventor with another science fiction question
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Writing: Input Wanted Community writing project PF choose-your-own adventure
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