Which pioneering figure was involved in both rocketry and the concept of space travel?

Herman Oberth is recognized as a pivotal figure in the early development of rocketry and the conceptualization of space travel. His work laid significant groundwork for future advancements in rocketry. In his influential book "The Rocket into Planetary Space," published in 1923, he articulated visions of space travel and the technical aspects required to achieve it, providing a theoretical foundation that would inspire both scientific and public interest in space exploration.

Oberth's ideas were instrumental in shaping the future trajectory of rocketry, influencing various pioneering figures, including Wernher Von Braun and others who would later contribute to practical rocket development and space missions. His contributions reinforced the understanding that space travel was not merely a scientific fantasy but a potential reality grounded in physics and engineering. This legacy is key to recognizing Oberth as a foundational figure in both the field of rocketry and the broader concept of manned spaceflight.