Air and Atmosphere
PL-1 · Lunar oxygen plant PL-2 · Airlock pump-down and gas recovery PL-3 · Martian atmospheric nitrogen separator PL-4 · Whole-habitat leak detection PL-25 · A single-occupant emergency oxygen pod grown from one plant PL-33 · A redundant, whole-habitat oxygen supply, not a single system PL-34 · Waste disposal and CO2 scrubbing for a closed habitat, on its own PL-37 · A UV-C scrubber loop for nitrous oxideFood, Soil and Biology
PL-5 · Closed nitrogen loop for a sealed farm PL-6 · A worm colony that ships and survives PL-7 · A beehive for a rotating room PL-8 · Grow lights that let a plant sleep PL-9 · Wind for a sealed forest PL-15 · A list of which animals earn a berth — and clean stock to fill it PL-16 · A crop list where every plant pays rent twice PL-17 · The medicinal plants, and who still knows how to use them PL-18 · A way to get live animals there — is shipping embryos the only answer? PL-19 · A seed-saving program for one air volume PL-20 · The crop table — every candidate scored against every loopLaunch and Transport
PL-10 · A ground-based mass driver PL-11 · An orbital catch tug PL-21 · A mountain flank that can take a mass driver exit PL-22 · Closed-loop cooling for a mountain’s worth of electromagnets PL-23 · An orbital tug that can actually catch a freight pod PL-24 · Lunar launch and support facilities for avatar robots PL-29 · A positioning satellite constellation for a new planetHabitat Structure
PL-14 · A sealed habitat we run on Earth first PL-27 · Inspecting and insulating a hundred thousand joints across a multi-wall hull PL-31 · A shaft drilled up through a mountain for a lunar base PL-32 · A load path for a spinning sphere versus a spinning tubeMaterials and Manufacturing
PL-12 · Asteroid regolith to printable metal PL-28 · Printed stainless parts that survive vacuum cold-welding and metal fatigue PL-35 · An affordable large-format printer or CNC machine for garage panel-making PL-36 · A durable way to personalize a panel for generationsRobotics
PL-13 · Robots that build the barrel PL-26 · A robot that clips onto its own rail without wheels or magnets PL-30 · Remote-controlled robots that work through real signal lagThe ones who paid with their lives
Valentin Bondarenko The crew of Apollo 1 Vladimir Komarov Michael J. Adams The crew of Soyuz 11 The crew of Challenger The crew of ColumbiaThe ones who saw it first
Konstantin Tsiolkovsky Robert Goddard Hermann Oberth Sergei Korolev Wernher von Braun Gerard K. O'Neill Carl Sagan Ed Bass Elon MuskThe ones who went
Yuri Gagarin Alan Shepard John Glenn The Mercury Seven Valentina Tereshkova Alexei Leonov The sixteen who flew Gemini The crew of Apollo 11 The twenty-nine who flew Apollo The Biosphere 2 crewThe ones who never left the ground
Katherine Johnson Margaret Hamilton Gene Kranz and the flight controllers The seamstresses of ILC Dover