Create an image of a vibrant and dynamic street mural that depicts a cosmic galaxy filled with swirling stars and planets, blending the worlds of street art and astronomy into a mesmerizing masterpiece.

Visualize an awe-inspiring street mural that showcases the intriguing blend of urban street art and the realm of astronomy. The mural ought to feature a cosmic galaxy abundant with swirling stars and a multitude of planets. This panorama should bridge the gap between the raw, unrefined aesthetic of street art and the profound, captivating essence of celestial bodies. Delicate gradients, smoky textures, and a spectrum of iridescent hues could be used to emphasize the depth and scale of the universe, resulting in a spectacular and immersive representation of the cosmos on a city wall.