A walk on a moon consists of two image-objects with both the same original image.
Both photographic objects lie upon the thin line between the threedimesional object and the twodimensional flat image, playing with the movement of the viewer around them. The spectator is invited to walk around the image-objects, as so the images are constantly altered by the change of light. 

3D-printed image into a sphere
two acrilyc plates facing each other