Goofs:
Continuity: The spaceship's different floors are never in order. For instance, Keinholz is on the top floor; he goes down one floor, looks around, then goes down another floor. This floor is the one with Carruthers and Eric playing chess. After Carruthers hears a scream he goes up the ladder to ask Keinholz if he had heard the noise; Carruthers peaks out of the hatch and is on the top floor, skipping the second floor Keinholz had to go through. (more)

Trivia:
The final battle between the monster and crew is being shown at the drive-in during the Bryan Adams’ video "Summer of '69". (more)

Quotes:
[first lines]
Spokesman at Press Conference: Ladies and gentlemen of the press, as you know the first attempt to send a spaceship to the planet Mars was made six months ago. We knew that that ship, the Challenge 141, had reached its destination. But that's all we knew. Teleradio communication with Mars ceased immediately...
(more)