Create a 8K photorealistic scene featuring an alien life form characterized by a brain perched atop mechanical spider legs. Place this entity in an extraterrestrial environment with vibrant, otherworldly landscapes. The setting should convey a sense of the alien and unknown, with unusual plant life, distant celestial bodies, and a palette of colors that evoke the mysteries of space. The mechanical spider legs should appear intricate and advanced, indicating both intelligence and adaptation to this unfamiliar terrain. Capture the eerie but awe- inspiring essence of this alien existence, highlighting the contrast between organic and mechanical forms in a harmonious yet surreal composition