The Impossible Voyage Home

In a near‑future where interplanetary travel is hampered by relentless cosmic radiation, humans have only a quarter‑year of usable health left once they leave a planet’s protective field. The tiny gain of a single month in life expectancy becomes a battlefield for engineers, doctors, and pilots, all racing to shorten exposure by making ships faster and shielding lighter. As Earth, Mars, and Venus drift apart, each window of alignment—a conjunction—is a precious chance for a fleeting voyage.

Ethan, a seasoned trainer, and Amantha, a brilliant but restless scientist, clash over the same problem: how to push the limits of the fragile human body without sacrificing the mission. Their debates about anti‑radiation suits, genetic resilience, and the mysterious “heredity block” reveal a world where the next generation of astronauts must be tougher, younger, and almost engineered for survival. With the clock ticking and the planets pulling away, they must find the right question that could change the odds of ever making it home.