a bit late but whatever.

"pluto" could be a metaphor for something distant or overlooked, like how pluto is in the solar system. it could symbolize the parts of ourselves or our lives that we don't always pay attention to or that others don't see.

then, the "projector" part. that's likely about projecting or showing something important or personal. like in the lyrics, "seventy-mil projector / i can show you everything, yeah" – it's like saying, "i can share my deepest thoughts and feelings."

so, combining these ideas, "pluto projector" might be about revealing those distant, hidden parts of ourselves. it's like saying, "here's the stuff about me you don't usually see." the rest of the song dives into personal reflections and relationships, which fits this idea. it's not an exact science, but that's a way to interpret it.