Earlier this summer, we noted that astronauts were having a hot moment, shilling for Louis Vuitton and Omega — not to mention the Orbit hat’s gloriously brief taste of fame. And the fall runways were rife with structured, futuristic garments and “haute helmets” galore. (Aloha Rag is currently stocking $1,195 Martin Margiela helmets — the ultimate accent piece, clearly.) Now that the fall collections have arrived in stores, the space-age theme has hit the racks, manifesting in flying-saucer tees, comet-streaked jumpers, lunar tops, and, yes, galaxy-print leggings. Lace up your metallic boots and check out some of the cosmos-inspired offerings in stores now.