Jul 13 2007
From The Space Library
Associate Administrator for NASA’s Exploration Systems Mission Directorate Scott J. Horowitz announced that he planned to leave NASA in December to spend more time with his family. A retired U.S. Air Force colonel and test pilot, Horowitz had logged over 1,138 hours of spaceflight, serving as commander or pilot on four Space Shuttle missions—STS-75 (1996), STS-82 (1997), STS-101 (2000), and STS-105 (2001). At the time he decided to depart NASA, Horowitz was leading NASA’s efforts to develop the next generation of spacecraft, intended to return astronauts to the Moon by 2020. NASA Administrator Michael D. Griffin accepted Horowitz’s resignation, praising the former astronaut’s tireless contribution to the Vision for Space Exploration. Griffin attributed NASA’s decision to pursue the Ares-I CLV to Horowitz, calling it his brainchild. NASA planned to use Ares-I to launch the Orion CEV, the capsule-style successor to the Shuttle. Horowitz had left NASA in 2004 to serve as the director of exploration and space transportation at the aerospace firm ATK. While he was at ATK, he had vigorously supported using the Space Shuttle’s reusable SRB as the basis for the first stage of the Ares-I CLV. NASA had chosen that design over the Atlas-5 and Delta-4 expendable launch vehicles (ELVs) before Horowitz returned to NASA as its exploration chief in 2005. Griffin had not yet named a successor to Horowitz.
NASA, “Scott Horowitz Announces Departure from NASA,” news release 07-154, 13 July 2007, http://www.nasa.gov/home/hqnews/2007/jul/HQ_07154_Horowitz_departs_NASA.html (accessed 9 June 2010); NASA Johnson Space Center, “Scott J. ‘Doc’ Horowitz, Ph.D. (Colonel, USAF, Ret.), NASA Astronaut (Former),” http://www.jsc.nasa.gov/Bios/htmlbios/horowitz.html (accessed 10 June 2010); Tariq Malik, “NASA’s Exploration Chief To Step Down for Family,” Space.com, 13 July 2007, http://www.space.com/news/070713_nasa_horowitz_updt.html (accessed 10 June 2010).
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