One Strange Rock

Will Smith

Self - Host

Chris Hadfield

Self

Jerry Linenger

Self

Mae C. Jemison

Self

Leland Melvin

Self

Nicole Stott

Self

Michael Massimino

Self - Engineer & Astronaut

Jeff Hoffman

Self

Peggy Whitson

Self

Jonathan Paredes

Self - Champion Cliff Diver

Jonathan Paredes

Self - Cliff Diver

Lucas Spelman

Self - Cal Fire Captain

Iain Kerr

Self - Expedition Leader (as Dr. Ian Kerr)

Iain Kerr

Self - Expedition Leader

Samdup

Self - Tibetan Buddhist Monk

Rocky Robinson

Self - World's Faster Motorcyclist

Qiang Xiao

Self - Chief Enginer

Beth Whitson

Self - Peggy's Mother

Nichelle Nichols

Self

Felipe Gómez Gómez

Self - Astrobiologist