Science fiction and fantasy have been part of mainstream Russian literature since the 19th century. Russian fantasy developed from the centuries-old traditions of Russian mythology and folklore. Russian science fiction emerged in the mid-19th century and rose to its golden age during the Soviet era, both in cinema and literature, with writers like the Strugatsky brothers, Kir Bulychov, and Mikhail Bulgakov, among others. With the fall of the Iron Curtain, modern Russia experienced a renaissance of fantasy. Outside modern Russian borders, there are a significant number of Russophone writers and filmmakers from Ukraine, Belarus and Kazakhstan, who have made a notable contribution to the genres.