Complex sentence: For the latter reasons, and because of his role in the foundation of JPL, Parsons is cited as among the most important figures in the history of the U.S. space program and has been the subject of several biographies and fictionalized portrayals.
Split into simpler sentences: For the latter reasons, and because of his role in the foundation of JPL, Parsons is cited as among the most important figures in the history of the U.S. space program. He has been the subject of several biographies and fictionalized portrayals.