«Letters Sent from Heaven» is a unique exhibition of experimental Japanese physicist Ukichiro Nakaya's photographs of snow crystals and electrostatic discharges.

This is the first time Ukichiro Nakaya's (1900-1962) work is presented in Europe in connection with the fog sculptures by his daughter, Fujiko Nakaya. This is also the first time Ukichiro Nakaya’s work is presented in Norway.