Bert Gentry Lee (born 1942) is an American scientist, space engineer, and science fiction author. He is currently chief engineer for the Planetary Flight Systems Directorate at the Jet Propulsion Laboratory.
Lee had engineering oversight responsibility for the twin rover missions to Mars that landed in January 2004, the Mars Reconnaissance Orbiter (MRO) in 2006, and the Deep Impact and Stardust missions. He was also the chief engineer for the Galileo project from 1977–1988 and director of science analysis and mission planning during the Viking projects.
In 2009, Gentry narrated and appeared in Discovery Channel's 2-hour special "Are We Alone?", which examined the possibility of life on other worlds in the solar system.
As an author he is best known for co-writing, with Arthur C. Clarke, the books Cradle in 1989, Rama II in 1989, The Garden of Rama in 1991 and Rama Revealed in 1993. He collaborated with Carl Sagan on the 1980 series Cosmos.
Rendezvous With Rama was written in 1972 and Clarke had no intention of writing a sequel. Lee turned the Rama series into a more character-driven story following the adventures of Nicole des Jardins Wakefield, who becomes the main character in Rama II, The Garden of Rama, and Rama Revealed. When asked, Arthur C. Clarke said that Gentry Lee did the writing while he was a source of ideas.
Lee went on to write three more science fiction novels after Rama Revealed. Two take place in the Rama universe (Bright Messengers, Double Full Moon Night) while one makes several references to it (Tranquility Wars).
- Cradle (1989) (with Arthur C. Clarke)
- Rama II (1989) (with Arthur C. Clarke)
- The Garden of Rama (1991) (with Arthur C. Clarke)
- Rama Revealed (1993) (with Arthur C. Clarke)
- Bright Messengers (1996)
- Double Full Moon Night (2000)
- Tranquility Wars (2001)
- A History of the Twenty-First Century (2003) (with Michael White)
- Cosmos: A Personal Voyage (1980) (co-writer)
- Are We Alone? (2009) (narrator)
- Living Universe: Journey to Another Stars (2018)
- Gentry Lee bio page at Caltech.
- Gentry Lee bio page at National Space Grant Foundation.
- "Archived copy". Archived from the original on July 23, 2008. Retrieved July 24, 2008.CS1 maint: archived copy as title (link)
- "Mr. B. Gentry Lee". NAE Website. Retrieved June 16, 2021.