Spero

Spero is a space vessel spanning nearly 100 kilometers. The ship is a living, breathing creature that can sustain life in the outer reaches of space.

In the future era, when life on Nidus is nearing destruction, the outlanders discover the gilled giant  near the dried-up basin of the Outer Rim.

Outlanders harness the power of this behemoth creature, infuse it with their own life-force and the remaining solarium deposits to create the massive space vessel Spero.

Spero is a behemoth creature that allows for the existence of human-life inside the inner-workings of its body. The relationship between Spero and its inhabitants is symbiotic. Spero harvests light via its solarium-hardened outer shell and ingests asteroids, ice, and other debris and converts it into oxygen for the inhabitants inside. Humans convert this oxygen into carbon dioxide which Spero then uses as an energy source for its bodily functions.

Spero is the reason life exists after The Last Soporatus.