An astronaut's open helmet drifts through the endless void of space, a vibrant rose blooming within, surrounded by a breathtaking cosmic ballet of swirling galaxies and colorful nebulae, captured with stunning photorealism. The 8k octane rendering reveals hyper-detailed textures and intricate lighting, creating a dreamlike contrast between the delicate flower and the vastness of the universe, enhanced by volumetric lighting and hdr effects.