Because there are air vents in every compartment throughout the space ship, the alien can easily utilize the air temperature control equipment to sneak up on unsuspecting astronauts and pull them into the extensive ventilation channels
If you want to know the truth, I absolutely love watching horror movies… Love to hate watching horror movies, that is. I’m the sort of person who thinks that it’s a good idea to put on the scary movie whenever possible. However, I’m also the sort of person who spends the entire film openly making fun of everything that I’m watching. It’s extremely rare that I watch a scary movie that actually has any impact on me. I feel like I got all of my sleepless nights out of the way when I was a little kid. All of that being said, I did actually watch a scary movie a few years ago that has left a lasting impression on me. Back in the day, I made the mistake of watching a movie Alien. I have not felt the same way about central heating, cooling, or air quality control systems ever since. If you’re not familiar with the movie, all you need to know is that the alien utilizes the heating and cooling ductwork inside the spaceship to navigate. The air duct channels are the perfect way for the monster to get from place to place without being detected. Because there are air vents in every compartment throughout the space ship, the alien can easily utilize the air temperature control equipment to sneak up on unsuspecting astronauts and pull them into the extensive ventilation channels. Most of the movie takes place with the alien hidden in the heating, cooling, and air quality control infrastructure that is necessary to keep them alive. To this day, I am very suspicious of my own air ducts. I always make sure that my air vent covers are securely screwed into every potential alien passageway.