T. A. Heppenheimer
Born: January 1, 1947
Died: September 9, 2015 (aged 68)
Bio: Thomas A. Heppenheimer was a major space advocate and researcher in planetary science, aerospace engineering, and celestial mechanics. His books are on the recommended reading list of the National Space Society.
Known for:
- Colonies in Space (1978)
- Countdown (1997)
- A Brief History of Flight (2001)
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