Explore 70 sci-fi colony writing prompts inspired by distant planets, failing space stations, orbital cities, and isolated futuristic settlements. This collection includes plot hooks, opening lines, title ideas, character prompts, setting inspiration, and cinematic sci-fi visuals designed to help writers build immersive speculative worlds shaped by survival, technology, and life beyond Earth. Inspired by stories such as Dune, The Expanse, Alien, and Interstellar, these sci-fi colony prompts explore artificial environments, corporate control, abandoned stations, luxury orbital hotels, harsh alien landscapes, and the emotional isolation of living far from Earth. Perfect for creative writing classes, NaNoWriMo preparation, worldbuilding, and atmospheric science fiction storytelling.