in Your Sun Machine Olafur Eliasson created a “cosmological” installation with the simplest of means. It is a work about the relationship between sun and earth. His contribution is nothing but a hole in the roof of the Californian gallery where the work was presented. Above the sun blazes, creating a vibrantly hot patch of light on the gallery floor. If you concentrate on the patch, you can actually see the sun moving. Until you remember something you learned in school: the reason that the light of this heavenly body creeps across the floor is that you and your own little planet are tearing across the universe at an unimaginable speed. Or had you forgotten that?