Create an image of a towering robot exploring the vast expanse of outer space, its metallic body adorned with glowing constellations and nebulae, serving as a protector and guardian of the cosmos.

Visually represent a colossal robot traversing the boundless void of outer space. The robot's metallic body is intricately decorated with glowing constellations and nebulae, symbolizing its role as a protector and guardian of the cosmic realms. The robot reflects the grandeur of the cosmos, a sublime balance between technology and vast cosmic wonders. As it explores, it exudes a sense of majestic, silent watchfulness, embodying the sentinel of the great beyond.