- 3D printer
- 4D printer
- Absolute zero
- Adverse
- Aeldari
- Aerogel
- Agricultural Revolution
- Ainur
- Aircraft
- Albert Einstein
- Alderson disc
- Alimbics
- Alliance of synthetic life
- Alterans
- Alvin Toffler
- Ancients
- Android
- Andromeda (Spaceship)
- Andromeda Galaxy
- Angels (DC)
- Anthropic principle
- Anti-gravity
- Antikythera Mechanism
- Antimatter
- Antimatter engine
- Ao
- Arachnids
- Arceus
- Arcology
- Arcturians
- Arthur C. Clarke
- Artificial Intelligence
- Artificial consciousness
- Artificial planet
- Artificial star
- Artificial wormhole
- Ascended
- Asgard
- Asteroid
- Asteroid Mining
- Asteroid brain
- Astral projection
- Astronomical unit
- Asurans
- Asuryani
- Atom
- Attotechnology
- Augmented reality
- Autobots
- Autonomous vehicle
- Avatar
- Banks orbital
- Barometer
- Battery
- Bernal Sphere
- Betazoids
- Beyond
- Beyonder (Marvel)
- Beyonders
- Big Bang
- Big Bounce
- Big Crunch
- Big Freeze
- Big Rip
- Bio computer
- Bioship
- Bioterminator
- Bishop ring
- Black body
- Black dwarf
- Black hole
- Black hole brain
- Black hole starship
- Borg
- Brane
- Brown dwarf
- Bubbleworld
- Buckminster Fuller
- Bulk Beings
- Bundectotechnology
- C'tan
- CRISPR gene editing
- Calculus
- Caplan Thruster
- Car
- Carbon nanotube
- Cardassians
- Carl Sagan
- Carnot engine
- Catalyst
- Causality
- Celestial Avatars
- Celestials
- Celestials (Marvel)
- Cell
- Centauri
- Changelings
- Chaos Gods
- Chaos theory
- Chozo
- Chthonians
- Citadel
- Citizen
- Civilization
- Clarke Belt
- Cloaking device
- Clock
- Cloning
- Clément Vidal
- Cold fission
- Cold fusion
- Cole Habitat
- Collective consciousness
- Colonizing Mars
- Combine
- Combustion engine
- Comet
- Communication
- Computing scales
- Computronium
- Consciousness
- Controllers
- Cosmic entities
- Cosmic microwave background
- Cosmon
- Cosmos
- Covenant
- Creator
- Cryptocurrency
- Cybermen
- Cyborg
- Cyclotron
- Cylons
- DNA
- DNA nanobot
- Daleks
- Dark Energy reactor
- Dark energy
- Dark matter
- De-extinction
- Decepticons
- Deep Ones
- Deforestation
- Degeneracy drive
- Demis Hassabis
- Desalination
- Diamondoid
- Dimension
- Disciples of the Light
- Dominion
- Downstreamers
- Draconians
- Drakh
- Drone
- Drukhari
- Duality
- Dyson sphere
- Dystopia
- Earth
- Ecumenopolis
- Einstein ring
- Einstein–Rosen bridge
- Elder Gods
- Elder Gods (Lovecraft)
- Elder Things
- Electricity
- Electromagnetic pulse
- Electromagnetic spectrum
- Electromagnetism
- Electron
- Element
- Elementals (Riddick)
- Elon Musk
- Endless
- Endless (DC)
- Energy
- Engineers
- Entropy
- Eru
- Eternal Ones
- Eternals
- Eternals (Marvel)
- Eternity
- Everything
- Evolution
- Exodites
- Extinction Level Event
- Fallen Empire
- Faster than light
- Federation
- Femtotechnology
- Ferengi
- Fermi paradox
- First Ones
- First Ones (Warcraft)
- Firstborn
- Flying Polyps
- Foglet
- Force
- Force field
- Forerunners
- Fossil fuel power station
- Freeman Dyson
- Freeze ray
- Furlings
- Furyans
- Fusion candle
- Galactic Empire
- Galacticans
- Galaxy
- Galaxy brain
- Galileo Galilei
- Gamma-ray burst
- Gamma-ray laser
- Gas giant habitat
- Gas giant refinery
- Gears
- Gene
- Genetic engineering
- Geoffrey Hinton
- Gigastructures
- Global warming
- Globus Cassus
- Goa'uld
- God
- Goldilocks zone
- Graphene
- Gravitational Singularity
- Gravitational lensing
- Gravitational wave
- Gravity
- Gravity laser
- Gravity shielding
- Great Old Ones
- Great Old Ones (Lovecraft)
- Great Vampires
- Grox
- Guardians of Oa
- Guardians of Time
- H. G. Wells
- Halo
- Harbingers
- Harlequins
- Heisenberg Uncertainty Principle
- Heliocentrism
- Higgs boson
- Hologram
- Homo Sapiens
- Humans (Alien)
- Humans (Andromeda)
- Humans (Assassin's Creed)
- Humans (Avatar)
- Humans (Babylon 5)
- Humans (Back to the Future)
- Humans (Buck Rogers)
- Humans (Buffy)
- Humans (Crysis)
- Humans (Destiny)
- Humans (Earth Final Conflict)
- Humans (Fifth Element)
- Humans (Forgotten Realms)
- Humans (Judge Dredd)
- Humans (Mass Effect)
- Humans (Metroid)
- Humans (Middle Earth)
- Humans (Moonfall)
- Humans (Pacific Rim)
- Humans (Revelation Space)
- Humans (Riddick)
- Humans (Ringworld)
- Humans (Snowpiercer)
- Humans (Space Odyssey)
- Humans (Star Trek)
- Humans (Star Wars)
- Humans (Stargate)
- Humans (Starship Troopers)
- Humans (Subnautica)
- Humans (The 100)
- Humans (The Expanse)
- Humans (The Matrix)
- Humans (The Songs of Distant Earth)
- Humans (Transformers)
- Humans (Warcraft)
- Humans (Warhammer 40k)
- Humans (World of Tiers)
- Hypernova
- Hypersonic
- Hyperspace
- Hyperverse
- Ice Age
- Iconians
- Industrial Revolution
- Infinite Indefinite
- Infinity
- Infinity map
- Inhibitors
- Instance
- Intelligence
- Intelligence scales
- Intergalactic travel
- Internet
- Internet of Things
- Interplanetary travel
- Interstellar ark
- Interstellar highway
- Interstellar travel
- Io
- Iosif Shklovsky
- Isaac Arthur
- Isaac Asimov
- Isaac Newton
- Isu
- Jaeger
- John Barrow
- John Smart
- John von Neumann
- Jovian brain
- Jules Verne
- Jupiter
- Kaiju
- Kardashev Scale Wiki
- Kardashev scale
- Karl Schroeder
- Kilonova
- Kilrathi
- Kimera
- Klingons
- Konstantin Tsiolkovsky
- Krasnikov tube
- Krell
- Kryptonians
- Kugelblitz
- Kuiper belt
- Kzinti
- Lab-grown meat
- Lampreys
- Lanteans
- Large Hadron Collider
- Large Language Model
- Laser
- Laser Weapon
- Laser computer
- Laser porting
- Laws of Physics
- Leonardo da Vinci
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