Astronomer Oleg Bartunov snapped these photos of rare rainbow clouds floating over Mount Everest earlier this year: "The phenomenon is caused by light reflecting off tiny ice crystals inside the body of the cloud's water vapour."
Astronomer Oleg Bartunov snapped these photos of rare rainbow clouds floating over Mount Everest earlier this year: "The phenomenon is caused by light reflecting off tiny ice crystals inside the body of the cloud's water vapour."