It’s 1981, and the dream of a new home in space for all humanity is dead. After fighting for decades against an intangible and ephemeral existential threat from beyond the solar system, Earth command has declared the war effort a huge waste of time. The honeymoon is over, and a future of glittering cities across the solar system and cosmic battles between giant robots just isn’t going to happen. The outcome is clear: it’s time to come home. But we don’t care. Giant robots may not make any sense. Celestial cities across the solar system are silly dreams. They are,…