World/ Sky
These are options in "new" mission build (F3)

Alien Cloudy Alien Foggy Alien Night Alien Starfield
Desert Day Desert Sunset Desert Starfield
Ice Clear Day Ice Night Ice Starfield
Lush Clear Day Lush Lite Sky Lush Night Lush Starfield
Mars Clear Day Mars Cloudy Day Mars Dusk Mars Starfield
Mud Day Mud Dusk Mud Cloudy Night Mud Starfield