Dr. Marcus Cole was the brightest mind at NASA—until the Artemis II mission exploded on live television, taking seven astronauts and his reputation with it. Blacklisted, bankrupt, and abandoned by everyone he trusted, Marcus drank himself to death in a dingy apartment. Then he woke up. Twenty-two years in the past. In his eighteen-year-old body. With every blueprint, every failure, every betrayal seared into his memory. This time, he won't work for NASA. He'll build something that makes NASA look like a toy. He'll crush the billionaires who stole his work, win back the woman who was never supposed to leave, and put boots on Mars before anyone even thinks it's possible. The stars belong to him now—and he's taking them back.