A close-up of a female eye, detailed and expressive, with a galaxy replacing the iris. The galaxy should have vibrant swirling stars, nebulae, and cosmic clouds, creating a sense of depth and wonder within the eye. The surrounding skin should be natural and soft, with subtle light reflections on the eye to enhance the cosmic effect. The colors of the galaxy should be a mix of deep purples, blues, and hints of glowing stardust, giving the image a surreal and ethereal feel