Star Crystal

Roger Campbell

Dr. Adrian Kimberly

Cal (as John Smith)

Sherrie Stevens

Lieutenant Billi Lynn

One version of the film's cover art shows Gar with needle-sharp teeth, and several members of the crew inside glass-covered hypersleep tables. Gar with needle-sharp teeth and hypersleep tables are actually not seen in the film anywhere at all.

Stefanianna Christopherson, who wrote and sings the ending theme song "Crystal of the Stars" was the voice of Daphne Blake in the cartoon series Scooby Doo, Where Are You! (1969).

During several exterior scenes of the space station, the top half of a toy Millennium Falcon spaceship from Star Wars: Episode IV - A New Hope (1977) is used as part of the exterior topography of the station.

When the SC-37 shuttle heads out from Mars, the planet is clearly transparent.

Computer readout misspells "neutron" as "nuetron" and "Judaism" as "Judism".