Squire's poem describes a woman by comparing her to outer space. Her eyes hold stars, her hair holds galaxies, and her mind contains whole universes. The speaker sees her as something vast and beautiful, a "celestial masterpiece," though also a little out of reach, since she seems "lost in the sky."
The second stanza widens the picture. Astronomers watch her night after night through telescopes, studying the way her stars shift and change. That turns her into something observed from far away, and the final line calls her "a muse across millennia," as if people have been inspired by her for thousands of years. The speaker's feeling is admiration, close to awe. The mood is dreamy and quiet, with a sense of wonder and a touch of distance. The subtitle suggests this was a quick daily writing exercise on a space theme, which fits its loose, free-flowing feel.