This was the best worst thing we’ve ever seen. I’m sorry. You’re welcome?
Leaving whole rocket stages to just kinda be in orbit and hit stuff. Talking in space by providing your own atmosphere thanks to your incredible, super lung capacity. Also, how that doesn’t work and Superman needs to be a close talker and hold conversations by vibrating his mouth directly on someone else’s spacesuit helmet.
Superman bodily materials
The hair that can hold at least a half ton. How does Superman cut his hair? Introducing weird gnarly alternate Superman with really long hair and uncut fingernails. Donating Superman’s bits to materials science. Making things out of hair. Totally realistic space elevator musings. Superman as a launch platform. Dissecting the Man of Steel for fun and profit. Using Superman for “free energy” (Saturday Morning Breakfast Cereal).
Superman’s built-in orbital mechanics skills. The tiny bit of nothing that would be all of 1987’s nuclear world arsenal against the power of the sun. The relative tiny-ness of the only nuclear weapons ever used in war. Proposals for nuclear de-proliferation. Going Dr Manhattan on the problem.
A bunch of stuff oh god this movie was silly
Nuclear Man’s totally fab nails. The golden crotch-trim on his super suit. Plugging a volcano. Superman’s “brick vision.” Slowing things down, because the moon has “less gravity.” It’s obvious, really. The actual disasters that await us if Superman pushed the Moon away.
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