Welcome to one of the greatest and earliest space horror/thriller movies ever where a cat is brought in space. Chances are high that viewers are used to modern cinema movies. The rhythm on that era is a little slow but you have to respect all those real details in the scenes. Almost everything are handmade. Also the cast was not informed about a jump-scare and the end result is their real-life reactions. Epic. Google it!
While you wait for each character to die in spectacular ways, tension builds up for the final battle. While this is true, the movie is a big puzzle to be solved. Referring to the way any survivors would return to earth or any way they could generally live, it is a job well done because of clever ways of overcoming obstacles again and again.
Here comes the spoiler break: even after tension relief, the movie makes comebacks and punches you again and again and again with plot-twists and more rough situations that are beautifully executed. Again, younger viewers might get a little bored at some points of the movie but it is a diamond straight from another millennium.
"Parker: If we ain't out of here in ten minutes, we won't need no rocket to fly through space!"
"Parker: I ain't drawing no straws, I'm for killing that goddamn thing right now."
"Ash: I can't lie to you about your chances, but... you have my sympathies."