Cosmic Bookscape 🌌🚀

A cozy 'open book, pocket universe' scene: an antique hardback lies open, with miniature planets, a tiny rocket, and a paper-cut city rising from its pages. Warm, bookish textures (linen cover, deckled edges) blend into a deep indigo-to-teal nebula backdrop, accented with soft rim lighting and subtle gold foil star specks. The composition centers on the book at the bottom third, inviting viewers to 'Open a Universe' ✨, to celebrate National Science Fiction Day 📚🌠.