The space mission on Io is called "Argus". In Greek mythology, Argus was a many-eyed giant who guarded the heifer-nymph Io.
"And now I see with eye serene The very pulse of the machine;" From 'She Was a Phantom of Delight' by William Wordsworth
In a 2022 interview with Screen Rant, Emily Dean went into detail about achieving the animation style: "We worked with Polygon Pictures in Japan, and they're incredible. They're just wizards and they come from, obviously, an anime background. But we wanted to bring the French influence in, what's called the Ligne Claire style, which means clean lines. And so we worked with a lot of contract artists, but primarily with a small studio - a French couple that helped us to marry the French influence with the Japanese to make something kind of unique and different. We used their designs and Polygon came up with a lot of designs for Martha and vehicles and the astronauts and a lot of other things. But it was really just kind of finding that middle ground and it's hybrid approach between CG characters.
They're all 3D, the characters, the vehicles, some of the background elements like the crystals and stuff. And then you also got 2D painted backgrounds that are drawn by hand and all the line work that is done on the characters themselves, especially on the faces. All of that is on the CG model and had to be sort of tweaked by hand by artists in Japan. And it was a very time consuming and laborious process to marry these disparate elements to make them cohesive."