Examining some of the thousands of potentially habitable exoplanets discovered over the past 20 years and whether some of them could be home to intelligent extraterrestrial life.
| Name | Type | Role | |
|---|---|---|---|
| Max Thompson | Writer | ||
| Gabriel Rotello | Writer | ||
| Doug Gordon | Writer | ||
| Erik Pinkston | Writer | ||
| Kevin Burns | Writer | ||
| Erik Pinkston | Producer | ||
| Nick Pope | Guest Star | Self - U.K. Ministry of Defense (1985-2006) | |
| Michael Dennin | Guest Star | Self - Physicist, Univ. of California, Irvine | |
| David Childress | Guest Star | Self - Author, Technology of the Gods | |
| Amy Shira Teitel | Guest Star | Self - Author, Breaking the Chains of Gravity | |
| Jonathan Young | Guest Star | Self - Founding Curator, Joseph Campbell Archives | |
| Michael Summers | Guest Star | Self - Planetary Scientist/Author, Exoplanets | |
| Giorgio A. Tsoukalos | Guest Star | Self - Publisher, Legendary Times Magazine | |
| Joel Sercel | Guest Star | Self - Founder, Transastra Corporation | |
| Michio Kaku | Guest Star | Self - Author, The Future of Humanity | |
| Jason Martell | Guest Star | Self - Author, Knowledge Apocalypse | |
| Bill Birnes | Guest Star | Self - Author, The Everything UFO Book | |
| William Henry | Guest Star | Self - Author/Investigative Mythologist | |
| Gabriel Rotello | Executive Producer | ||
| Susan E. Leventhal | Executive Producer | for HISTORY | |
| Kim Egan | Executive Producer | ||
| Kevin Burns | Executive Producer | ||
| Giorgio A. Tsoukalos | Executive Producer | Co-Executive Producer | |
| David Silver | Executive Producer | ||
| Max Thompson | Executive Producer |