New Worlds was a British science fiction magazine that began in 1936 as a fanzine called Novae Terrae. John Carnell, who became Novae Terrae's editor in 1939, renamed it New Worlds that year. He was instrumental in turning it into a professional publication in 1946 and was the first editor of the new incarnation. It became the leading UK science fiction magazine; the period to 1960 has been described by science fiction historian Mike Ashley as the magazine's "Golden Age".
First issue cover, 1946
A science fiction magazine is a publication that offers primarily science fiction, either in a hard-copy periodical format or on the Internet. Science fiction magazines traditionally featured speculative fiction in short story, novelette, novella or novel form, a format that continues into the present day. Many also contain editorials, book reviews or articles, and some also include stories in the fantasy and horror genres.
A front cover of Imagination, a science fiction magazine in 1956
March 1941 cover of the Science Fiction magazine, volume 2, issue 4