In literature, the moon usually symbolizes mystery and imagination.
Here's examples of the moon connected with Lenina:
- The moon is first mentioned early and connected with how she was sleeptaught as a child about Epsilons: "Even Epsilons are useful."
- Later, Huxley says Lenina is appalled by the pale face of the moon.
- She mentions the moon and sea on the date with Bernard.
- Franny's face is described as "moon-like."
Huxley is trying to show that Lenina has no sense of mystery and imagination. Her memories are vague and empty. She is pulled in no direction. For her, the moon has lost its symbolic value. To her, the night is simply night, and the moon is simply the moon. There's no mystical or religious attraction to it for a Beta like Lenina.
However, the moon is still important to the Savages, especially John. John will eventually be Lenina's moon: he will give her a sense of mystery and imagination when they meet in the second half of the novel.
Lenina looking at the moon simply represents her want to feel natural. The moon is one of the most natural and mysterious things in our world/lives today the way it circles the earth and brightens our night sky. Lenina staring at the moon in chapter 12 shows us that she is slowly changing and that her attraction to natural normal things is starting to grow. In previous chapters lenina attended a date with Bernard who insisted they look at the stars and moon and share eachothers company, she responded by only wanting a "physical encouter. Now in this chapter we see her wanting to stare at the moon for herself, a respect for natural life.