This week, after a six-month, 292.5-million-mile journey, NASA{:.small}’s Perseverance rover touched down on the surface of Mars. The United States is the only country to have successfully landed on the Red Planet, but spacecraft from China and the United Arab Emirates recently arrived in Mars’s orbit. In the fifty years since the Cold War space race was at its peak, other governments and private businesses have launched ambitious space programs. How long can the United States remain the leader in space exploration? Adam Mann joins Dorothy Wickenden to discuss the Perseverance mission and the past and future of America’s space program.