Gregory Patrick Agnew
Grandpa
Roman Spenneberg
Physicist (Age 15)
Jax Inman
Physicist (Age 8)
Brodie McCauley
Physicist
Olivia Jones
Ship Captain
Jezreel Forand
Ship Engineer
Nicholas Poppe
Ship Pilot
Sofia Spenneberg
Guardian Angel (voice)
Ian Papworth
Distorted voice (voice)
Adam S. Depew
Spirit (voice)
Martin Luther King Jr.
Self (archive footage)
Carl Sagan
Johnny Cash
June Carter Cash
