How to live next door to a gas giant

The covers of this website are four moon bases. Swipe through them and you're standing on Io, Europa, Ganymede, and Callisto, looking up at Jupiter at its true angular size — nineteen and a half degrees of sky from Io, about forty full Moons wide. Behind each base we've drawn the machines a real outpost would need, and none of them are invented from nothing. Here is what each one is, and why it's there.

Io · Outpost Proxy-1Don't go. Send hands.

Io is the most volcanically active body in the solar system and sits inside Jupiter's radiation belts, soaking up a dose on the order of 36 gray a day — a lethal human exposure in well under an hour of surface time. So our Io outpost is the only one with no one home. The domes hold electronics, not people; the HUD says crewless — visit by proxy, and it means it.

The hardware follows from that one fact. The rover is teleoperated — flown by an operator somewhere safer, the way NASA drives Perseverance on Mars today, except the operator could sit as close as Callisto orbit, where the light-speed lag drops from tens of minutes to about six seconds. The radiator fins glow dull orange because electronics that survive that environment run hot behind heavy shielding, and heat on an airless world leaves by radiation alone. And the seismic tripod is the actual science case: Io is kneaded by Jupiter's tides like dough — that's what melts it — and a seismic network listening to the kneading is on real mission wishlists. You don't settle Io. You wire it for sound.

Europa · Leading-Edge BaseLive under the ice, not on it.

Europa's surface is nearly as hostile as Io's — roughly 5 sieverts a day of Jovian electrons. But Europa ships its own shielding: water ice, which is excellent at stopping radiation. Bury a habitat under about three meters of it and the dose falls to something a crew can live with. That's the "ice roof" in the vista's subtitle. (The moon's own ice shell is kilometers thick; the three meters is just what you'd pile on your roof.)

The surface, then, shows only the throat of the base: a winch gantry over a borehole, with a faint blue glow coming up the shaft. The machine at the bottom of that cable is a cryobot — a nuclear-heated melt probe that descends by melting the ice ahead of it and letting it refreeze behind. NASA's JPL has been maturing exactly this under its SESAME program, because a cryobot is the leading plan for reaching Europa's buried ocean. The tanks next door hold what the borehole yields: meltwater, which on Europa is drinking water, breathable oxygen after electrolysis, more roof, and — split into hydrogen and oxygen — rocket propellant. One resource, four jobs.

Every moon out there hands you one unfair advantage and one unforgivable constraint. Design is the same job with smaller numbers.

Ganymede · Regio StationThe only magnetic roof off Earth.

Ganymede is the largest moon in the solar system and the only one with its own internally generated magnetic field — Galileo measured it in 1996. It's a small field, and Jupiter's weather still leaks in near the poles, but near the equator it knocks the charged-particle dose down substantially. That's why our station sits in the equatorial band, and why it's the one place we drew a greenhouse row: if you're going to gamble on growing food under glass anywhere in the Jovian system, you do it under the only magnetic umbrella available.

The lonely tower off to the right, glowing faintly at a polite distance, is a Kilopower-class fission reactor — the umbrella-shaped radiators are the giveaway. This is the least speculative machine in all four vistas: NASA and the Department of Energy ran a full ground test of the 1–10 kilowatt KRUSTY unit in 2018. It worked. At 5 AU, where sunlight is one twenty-seventh of Earth's, fission isn't one power option among several; it's the power plan. You park it away from the habitat and the beds, because distance is the cheapest shielding there is.

Callisto · Valhalla RimThe safe harbor and the fuel dock.

Callisto is the sane one. It orbits outside the worst of the radiation belts — surface dose in the vicinity of a tenth of a rem per day, a number you manage with schedules rather than heroics — and it's geologically quiet. Which is why, when NASA's HOPE study (Human Outer Planet Exploration, 2003) asked where humans could plausibly stand in the Jovian system, it picked Callisto. Our base sits on the rim of Valhalla, a ringed impact basin nearly four thousand kilometers across; the concentric scarps on the vista's horizon are its real geography.

So Callisto gets the port: a landing pad with a lander being turned around, and a propellant farm — those spheres — filled by mining the ice that Callisto has in bulk. Water split into hydrogen and oxygen is rocket fuel, and a fuel dock at the outer edge of Jupiter's gravity well is the piece of infrastructure that turns one-way stunts into a shipping lane. Every frontier ends up with a town like this: the place you top off, fix things, and leave the hard country to the robots.

Why a design studio thinks about any of this

Because this is the job, with the costumes changed. Every moon up there hands you one unfair advantage and one unforgivable constraint — Io's energy and Io's radiation, Europa's water and Europa's cold, Ganymede's field, Callisto's dullness — and the design work is arranging what you can't change until people can live with it. That is exactly the shape of a clinic intake flow, a city services portal, a Salesforce org twelve years into its decisions. The constraints there are regulation, legacy systems, and eight-minute appointment slots instead of gray per day, but the discipline is identical: respect the physics, spend your cleverness on the layout.

There's also an honesty practice hiding in it. Those vistas keep a hard line between the computed and the dreamed — the HUD tells you which is which on every frame. We think that line is a professional muscle. A studio that lets you believe a fantasy number in a hero image will eventually let a fantasy number into a case study. Ours says illustrative when it's illustrative and ±2° when it's real, on the space art and on the engagement ledger alike.

What the future actually holds

Nearer than the bases, further than we'd like. NASA's Europa Clipper is en route now and arrives in April 2030; it will fly through Europa's presumed plumes and map the ice shell our cryobot would someday drill. ESA's JUICE arrives in July 2031 and will end its mission as the first spacecraft ever to orbit another planet's moon — Ganymede, our greenhouse world. Those two ships will retire more uncertainty about the Jovian system than everything since Galileo (both of them).

People? Honestly: decades. Cost, radiation, and life support at 5 AU are all unsolved at human scale, and anyone selling you a date is selling you something. But every machine in our vistas is a thing humans have already built, ground-tested, or formally studied — which means the bases aren't fantasy, they're backlog. The future holds a prioritization exercise. We'd know something about those.

The short version: the front page of this site is a portfolio piece about designing under constraint, disguised as space art. The disguise is doing honest work.

Go stand on the moons →