The oft-overlooked actual difficulties of space settlement. Not technology and logistics, but like, how hard it will likely be for the humans doing the job at first. And second. And then for a while after, too.
Plants in spaaaaaaaace
Growing fresh food in space habitats. Poop-potatoes. Wide-spectrum LEDs. Self-contained hydroponics/aeroponics.
People in spaaaaaaaaace. Dealing with microgravity. Bro, do you even lift in space? Eyeball un-squishing. Figuring out how to burp. Fluid-pooling and major injury.
Turning people into jelly. Differing human sensitivity to sustained g-forces in different directions. The wonderful engineering concept of the ship with omnidirectional seating that reconfigures on-the-fly for optimal g-resistance (The Razorback).
High-speed space impact
Turning into jelly and then having your jelly explode your ship, because physics. Relativistic baseballs. Long-haul space-racing and how to be your own butt-wiping pit crew.
Kinetic weapon diplomacy
Nuclear non-proliferation treaties in space. Orbital kinetic weapons and cloaked nuke-ships playing the role of the submarine as deterrent.
Interstellar highway program
Minimum viable star system bootstrap answering machine. The Fermi paradox. The odds that most of the signs of alien civilization that we might discover would be past.
The Universe Today Ultimate Guide to Viewing The Cosmos: Everything You Need to Know to Become an Amateur Astronomer by David Dickinson & Fraser Cain: Amazon
The Expanse Season 3: Prime Video
Guide to Space by Fraser Cain: YouTube
Giving’em the old Philip K Dick joint. Cyberpunk. Adaptation fidelity.
Even though it looks like it’s the future…
Luminescent tattoos! Bioluminescence, electroluminescence, phosphorescence, and maybe some other -escences too! A world with three boobs. Well, maybe more than that in the whole world. Hand phones. Ubiquitous smart glass. Neck-mounted face-replacing direct-eye laser projectors. Memory manipulation and deletion.
Digging a hole through the Earth. Trying to find hard things to do when building a space elevator is too easy. Adding unnecessary rockets to your earth-faller to reach a seventeen minute trip time. Digging deep in the Earth and heat issues. Finding impenetrable hot rock stew even without piercing the crust. Atmospheric pressure in the center of the Earth. Making it work by vacuum tube. The one easy straight line through the Earth that avoids the Coriolis effect, and the actually useful curved lines between land areas.
Camera rocket grenades that explode into camera bullets. Like a camera, but more messy. IR scanning. Two-dimensional room-mapping by Roomba. Photogrammetry. Playing VR hentai sex games in your room, in your room.
Total Recall 2012: iTunes | Amazon
My room in VR in 1:1 scale (Photogrammetry Scan) by Az Balabanian: YouTube
FACE SWAP by David Gidali: Vimeo