Tom Bacon, a renowned engineer from Cambridge, was recently honored for his groundbreaking contribution to the Apollo missions by developing the first practical hydrogen-oxygen fuel cell. This fuel cell provided crucial electricity to the Apollo 11 mission that landed the first man on the moon in 1969. Recognized by President Nixon for his indispensable role in the Moon landing, Bacon's innovative technology revolutionized power sources for space exploration. The fuel cell, using hydrogen and oxygen to generate electricity with water as the only byproduct, was more efficient and lighter than existing batteries, making it ideal for NASA's spacecraft. Bacon's dedication and ingenuity have inspired generations of engineers, with his work being hailed as pioneering and motivational. The unveiling of the blue plaque in Cambridge signifies the lasting impact of Bacon's work on engineering and space exploration, commemorating his legacy in advancing technology and pushing the boundaries of innovation.