Alice Bowman
В роли: Self - Mission Operations Manager (MOM) New Horizon

Ronald Garan
В роли: Self - Astronaut

Michael Simon Hall
В роли: Scientist Chris McKay

Matt Heverly
В роли: Self - Curiosity Rover Driver

Paul Land
В роли: Self - Major, Chief of Current Operations

Chris McKay
В роли: Self - Planetary Scientist, NASA

Ralph McNutt
В роли: Self - Phd., Co-Investigator, New Horizon

Katie Stack Morgan
В роли: Self - Scientist, Jet Propulsion Laboratory

Conor O'Brien
В роли: Scientist

David O'Brien
В роли: Narrator

Charles Pellerin
В роли: Self - Phd., NASA, Director of Astrophysics (как Charlie Pellerin)

Phil Plait
В роли: Self - Science Writer and Blogger

Carolyn Porco
В роли: Self - Phd., Imaging Team Leader, Cassini

John Rennie
В роли: Self - Science Journalist

Bashar Rizk
В роли: Self - Imaging Scientist, OSIRIS REx

Terianne Shetler
В роли: Scientist

Peter Smith
В роли: Self - Phd., Imaging Scientist, OSIRIS REx

Alan Stern
В роли: Self - Phd., Principal Investigator, New Horizons

Michelle Thaller
В роли: Self - Scientist, Goddard Space Flight Center

Kathryn Thornton
В роли: Self - Astronaut

Hal Weaver
В роли: Self - Phd., Primary Scientist, New Horizons

James Zeiss
В роли: Scientist, New Horizons