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As a new era of exploration of the Red Planet begins, the Red Planet's mysteries might be close to getting solved; ancient cataclysms are believed to have left Mars barren, but science continues to find clues that this red planet was once blue.
- William ShatnerSelf
- David WhiteheadSelf - Investigative Journalist and Radio Host
- Jonathan YoungHimself - Founding Curator Joseph Campbell Archive
- Michael DenninSelf - Physicist, University of California, Irvine
- Michio KakuSelf - Theoretical Physicist, City University of N
- Travis TaylorSelf - Astrophysicist
- Tok ThompsonSelf - Associate Professor of Anthropology, USC
- Andrew CollinsSelf - Author, Beneath The Pyramids