Two identical terrains with different resolutions (4096, 2048) and materials (by David) at the same location. The brighter yellowish parts are from the higher resolution one and the other terrain contributes the dark brown. The two guys in the space suits are Michael3 from DAZ 3D. The backdrop is from the Deep Space 4 HDRI. The key light is from the sun, ambient from the HDRI is sucked off by negative HDRI Effect and a parallel light emulates the faint glow from the sky behind.