island universe (noun) galaxy: nebula
Sinonime: a bundle of nerves, all wound up, anxious, critical, excitable, excited, fidgety, high-strung, ill at ease, impatient, irascible, irritable, jittery, jumpy, keyed up, nervous, on edge, overstrung, restive, restless, skittish, tense, touchy, uneasy, uptight*