William Hartmann
Cast
William Hartmann is known for Future Flight (1987), Cosmic Collisions (2009) and UFOs: The Secret History (2010).
Cast
- 2010How the Universe WorksSelf - Planetary Scientist
- 2010UFOs: The Secret HistorySelf
- 2010UFOs: The Secret History Part 2 - The Extraterrestrial HypothesisAstronomer, Artist; University of Arizona
- 2009How the Earth Was MadeSelf - Planetary Scientist, Planetary Science Institute, Arizona
- 2008CatastropheSelf
- 2007The UniverseSelf - Planetary Science Center
- 1999If We Had No MoonSelf
- 1999The PlanetsSelf - Planetary Science Institute, Arizona
- 1964HorizonSelf