Great entry! The combined aesthetics of the visuals and sounds really sells it.
The Snake inspiration is obvious enough, but you mentioned that this was inspired by multiple 80's era games. After playing the only other inspiration I can think of is Asteroids, so I wonder what elements of other classic games did you draw from? I'm also wondering what does the name mean, why is a reactor in space? (I'm reading too much into this aren't I)
Personally I would change the control scheme to use all the arrow keys or WASD and make the snake move in the direction of those respective keys. Binding the unchanging directional movement of the snake in a 2D space to "turning" left and right just doesn't feel as intuitive. One could get used to it but personally speaking I think the current control makes for slower reactions and clunkier gameplay.
Anyhow, this is still a pretty fun game. Great job!