A close-up, dramatic illustration depicting the head of a Tyrannosaurus Rex rendered in a vibrant, cosmic style. The T-Rex's open jaws dominate the frame, teeth sharp, jagged, and menacing, colored in shades of deep purples and blues. Within the open mouth, a brilliant nebula explodes with color, showcasing swirling galaxies of pink, violet, and touches of turquoise, giving the impression the dinosaur's mouth contains a universe. The dinosaur's skin has a rough, textured appearance, with visible ridges and scales, rendered in a palette of dark blues and purples. Dripping effects emanate from the teeth, adding an ethereal quality to the scene. The background is a stark, absolute black, enhancing the contrast and drawing all the focus onto the dinosaur and its cosmic interior. The overall mood is fantastical and awe-inspiring, a fusion of prehistoric and cosmic imagery, with a touch of surrealism. The style is reminiscent of modern fantasy art.