Scott J. Horowitz, a retired U.S. Air Force colonel and NASA astronaut, has been a significant figure in the evolution of human spaceflight, particularly concerning the Space Shuttle program and subsequent exploration initiatives. His extensive experience as a pilot, commander, and administrator has provided him with a unique perspective on the challenges and advancements in space transportation and exploration.

Early Life and Education

Born on March 24, 1957, in Philadelphia, Pennsylvania, Scott Jay Horowitz demonstrated an early interest in aviation and engineering. He pursued his passion by earning a Bachelor of Science in engineering from California State University, Northridge, in 1978. Furthering his expertise, Horowitz obtained both a Master's and a Ph.D. in aerospace engineering from the Georgia Institute of Technology in 1982. His academic background laid a solid foundation for his future endeavors in aerospace and space exploration.

Military Career and NASA Selection

Following his education, Horowitz joined the United States Air Force, where he served as a T-38 and F-15 pilot. His dedication and skill led him to the U.S. Air Force Test Pilot School, from which he graduated in December 1990. In 1992, Horowitz's persistence paid off when he was selected as an astronaut candidate by NASA, becoming part of NASA Group 14. This selection marked the beginning of his distinguished career in space exploration.

Space Shuttle Missions

Horowitz's NASA career was marked by four Space Shuttle missions, each contributing to significant advancements in space science and exploration:

  • STS-75 (February 22 – March 9, 1996): As pilot of the Space Shuttle Columbia, Horowitz participated in the Tethered Satellite System (TSS-1R) mission, aiming to generate electricity through a conducting tether. The mission faced challenges, including a malfunctioning tether, but provided valuable data for future endeavors.
  • STS-82 (February 11 – February 21, 1997): Serving as pilot, Horowitz was part of the second servicing mission to the Hubble Space Telescope, enhancing its capabilities and extending its operational life.
  • STS-101 (May 19 – May 29, 2000): As pilot, Horowitz contributed to the mission's objectives, which included the transfer of supplies from the Discovery Orbiter to the International Space Station (ISS) and the change-over of the Expedition 2 and Expedition 3 crews, the resident crews of the ISS. This mission was crucial for maintaining the ISS's operational readiness and supporting its long-term goals.
  • STS-105 (August 10 – August 22, 2001): As commander, Horowitz led the crew in delivering supplies and conducting a crew rotation at the ISS, further solidifying the Shuttle's role in supporting the station's continuous human presence in space.

These missions underscored Horowitz's leadership and technical expertise, contributing to the success of NASA's human spaceflight objectives during that period.

Transition to ATK Thiokol and Support for the Vision for Space Exploration

After retiring from NASA and the Air Force in October 2004, Horowitz joined ATK Thiokol, a company specializing in aerospace technologies, as the Director of Space Transportation and Exploration. In this role, he advocated for the evolution of the Space Shuttle systems, emphasizing the importance of leveraging existing hardware, infrastructure, and personnel to minimize development schedules. His goal was to provide a safe, reliable, and cost-effective method to ensure human access to space and support heavy lift capabilities for exploration missions, particularly in the context of the planned retirement of the Space Shuttle in 2010. Horowitz's insights were shared in a prepared statement to the Senate Committee on Commerce, Science, and Transportation on May 18, 2005, where he discussed the potential for transitioning the Shuttle program to support the Exploration program, thereby eliminating any gap in U.S. human spaceflight capability. He highlighted the importance of learning from past lessons to enhance future human spaceflight endeavors. ([](

Return to NASA and Leadership in Exploration Systems

In September 2005, Horowitz returned to NASA as the Associate Administrator for the Exploration Systems Mission Directorate. In this capacity, he led efforts to develop the Orion spacecraft, the nation's next-generation piloted vehicle designed to return astronauts to the Moon and venture to Mars and other destinations in the solar system. Under his leadership, NASA made significant strides in implementing the Vision for Space Exploration, as outlined in the NASA Authorization Act of 2005. This act provided a national framework supporting and expanding upon the administration's goals for space exploration, with Horowitz playing a pivotal role in aligning NASA's human exploration and robotic activities with these objectives. ([](

Advocacy and Perspectives on Space Policy

Throughout his career, Horowitz has been an advocate for reorienting NASA's focus toward human exploration of Mars, with the goal of establishing permanent human outposts and settlements on the red planet. He has been an active member of the steering committee of the Mars Society, contributing to discussions and initiatives aimed at advancing human exploration of Mars. His commitment to this vision was evident during one of his space shuttle flights, where he had the Mars Society's Martian flag hoisted out of the shuttle's payload bay, symbolizing his support for the organization's mission. ([en.wikipedia.org](

In September 2010, Horowitz publicly expressed his concerns regarding the direction of the U.S. space program, particularly in relation to the cancellation of the Constellation Program. In a post on the Mars Society's website, he highlighted what he perceived as myths driving the current proposal to cancel the program, emphasizing the need for a clear and consistent trajectory in U.S. space policy. ([americaspace.com](

Conclusion

Scott J. Horowitz's contributions to human spaceflight, from his early days as an Air Force pilot to his leadership roles within NASA and the private sector, have been instrumental in shaping the trajectory of U.S. space exploration. His technical expertise, leadership, and advocacy for human exploration continue to influence discussions and policies related to the future of space travel and exploration.

Sources

  • Editor — Prepared Statement by Scott Horowitz: "Human Space Flight – The Space Shuttle and Beyond" —
  • Scott J. Horowitz —
  • Editor — Opening Statement by Scott Horowitz – House Science Committee Hearing: Implementing the Vision for Space Exploration: Development of the CEV —