Four Orbits
Earth is gone. Humanity endures in four distant orbits.
Ten great ring habitats were meant to carry civilization beyond a dying inner solar system. Six escaped Earth. Only four reached their destinations.
Two centuries later, the surviving settlements around Titan, Callisto, Oberon, and Triton have become worlds of their own-each with distinct cultures, loyalties, and ideas about humanity's future. Their people have learned to live beneath radiation shielding, inside rotating habitats, and under the constant pressure of systems that cannot be allowed to fail.
Then evidence emerges that Ring Nine may still exist.
Abandoned near the ruins of humanity's birthplace, the lost habitat represents more than another place to live. Its structure, machinery, and forgotten records could change the balance of power across the outer solar system-or expose the fragile limits of everything the survivors have built.
Aboard the expedition vessel Long Arc, eighty-four people begin the years-long journey toward Earth. What they find will force four isolated civilizations to confront a question none of them can answer alone:
Did humanity escape its past-or merely carry it into the dark?
Four Orbits is a sweeping hard-science-fiction novel about survival, family, political division, and the ordinary people responsible for keeping civilization alive. Grounded in orbital mechanics and the realities of long-duration spaceflight, it explores not only how humanity might survive beyond Earth, but what kind of humanity would remain.
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