Daniel Saul Goldin served as the 9th and longest-tenured administrator of NASA from April 1, 1992, to November 17, 2001. He was appointed by US President George H. W. Bush and also served under presidents Bill Clinton and George W. Bush. He is an entrepreneur and technologist. Most recently, he is the founder of Cold Canyon AI, an innovation advisory company. His career has spanned numerous technologies and businesses in space science, aeronautics, national security, semiconductors, and artificial intelligence.