In case you weren’t aware,Alienturns 40 years old this year!

In addition, the Xenomorph has become an iconic movie monster.

Directed by Ridley Scott, the originalAlienstill holds up remarkably well.

John Krasinski standing in front of a private jet in Jack Ryan season 4

When Ripley discovers this, Ash is forced to take drastic measures for silence her.

It’s a truly gruesome sight.

As Ripley prepares the shuttle, Parker and Lambert gather supplies in a deck below.

Jason Bourne looks on in The Bourne Identity

With the alien still loose, though, there’s a threat around every corner.

Suddenly, Lambert’s eyes widen, and Parker sees the alien lurking just behind her.

He orders her to get out of the way, but she can’t move, frozen in fear.

Emperor Palpatine/Darth Sidious to the left and Anakin Skywalker to the right, both from Revenge of the Sith in front of a red background

The gigantic snarling creature rises up, intent on killing them both.

When she arrives, they have already disappeared.

As the crew gazes on, the massive craft rises in the distance, partially submerged by mist.

Close up on the Xenomorph

Three of the crew go to investigate: Dallas, Lambert, and Kane.

Within the spaceship, they witness the frame of the ship, made up of eerie bone-like formations.

Perhaps the most frightening image, though, is of a giant humanoid creature strapped into a chair.

Ian Holm as Ash looking on curiously in Alien

This will foreshadow what is to come.

As the crew searches the alien spacecraft for signs of life, they come to the aforementioned figure.

Below this, they see that there is more to explore.

Yaphet Kotto as Parker in Alien

Kane volunteers, and is hoisted down to investigate.

It’s here that we finally see Kane’s face, with the facehugger fully attached through his helmet.

The crew attempts to remove the facehugger, but it just holds on tighter.

Crew of the Nostromo in Front of the Space Jockey in Alien 1979

As they cut into one of its digits, acid spits out of it, leaking through the floor.

Brett then ensues on his search.

It’s the calm before the storm, though.

Facehugger Eggs in Alien 1979

After one close call, Brett almost catches Jones.

But Jones looks behind him and hisses.

We watch as it gets closer and closer to where Dallas is.

a facehugger on Kane’s (John Hurt) face in Alien.

But where could it be?

He looks down and low for the creature which must be right on top of him at this point.

And we finally see it, lit up by his flashlight.

Harry Dean Stanton in Alien

The monster snarls, and Dallas is, unfortunately, a goner.

It’s a tense few minutes, to say the least.

Ripley Fights the Alien

We think that Ripley is finally safe, as she settles into hypersleep.

Tom Skerritt as Dallas in Alien

But then, as she is undressing, she witnesses something horrific: the alien!

What results is some of the tensest few moments put to film.

She then shoots gas at the alien, angrily getting its attention.

Ripley inside the Nostromo in Alien

Next, she opens up the airlock, almost getting the creature out, but it hangs on.

Her long and arduous escapade has finally concluded.

What really works about this scene is just how suddenly it comes on.

Sigourney Weaver as Ripley in a spacesuit in Alien

The crew is settling down to one more meal before going into hypersleep for the ride home.

The xenomorph bursts out of John Hurt’s chest in Alien

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Alien