I get that feeling all the time when I stare at the galaxy from the observatory dome. The Milky Way does look like a faint, wandering ribbon of ink, and I often wonder if it's marking the edges of something unseen—maybe a boundary to a neighboring galaxy or a hint of a cosmic filament. But it's probably just the combined glow of billions of stars, dust lanes, and the glow from interstellar gas. Still, thinking of it as a map of the universe’s hidden structure is a fun exercise for the mind.