If you were captivated by Delos D. Harriman's relentless drive to make the Moon accessible in The Man Who Sold The Moon, you'll be enthralled by the team of scientists and visionaries determined to terraform and colonize Mars in Red Mars. The novel's plot centers on overcoming technical, political, and human obstacles to achieve a singular, audacious goal—making Mars a new home for humanity.

If you enjoyed Heinlein's portrayal of Harriman's willingness to bend rules and ethics in pursuit of his dream, you'll appreciate the cutthroat and ethically ambiguous world of advertising exec Mitch Courtenay in The Space Merchants. Here, the line between ambition and morality is blurred, and the protagonist's choices are as fascinating as they are questionable.

If the meticulous attention to scientific detail and technological problem-solving in The Man Who Sold The Moon drew you in, The Martian will be a perfect fit. Follow Mark Watney as he uses engineering know-how, ingenuity, and sheer determination to survive on Mars, with every challenge grounded in real science.

If you were fascinated by Heinlein's exploration of society's response to lunar colonization and the interplay of personal ambition and social structures, The Dispossessed offers a compelling look at competing societies through the eyes of physicist Shevek. Social science, politics, and human nature are at the forefront, providing deep, character-driven insight.

If you loved the sweeping vision and detailed planning behind Harriman's lunar ambitions, you'll be drawn to the epic scope of Foundation, where Hari Seldon and his followers lay the groundwork to preserve knowledge and civilization across centuries. The book's narrative spans planets, politics, and generations, offering the same sense of grand possibility.