when did this genre originate?
Early 1900s
Science fiction magazine
The first specialized English-language pulps with a leaning towards the fantastic were "Thrill Book" (1919) and "Weird Tales" (1923), but the editorial policy of both was aimed much more towards weird-occult fiction than towards sf."
what is the frequency of scoops (magazine)? Weekly what type of magazine is it? Science fiction magazine who are the publishers? Pearson's
wiki:20976760
Science fiction magazine [SEP] History of science fiction magazines
Malcolm Edwards and Peter Nicholls write that early magazines were not known as science fiction: "if there were any need to differentiate them, the terms scientific romance or 'different stories' might be used, but until the appearance of a magazine specifically devoted to sf there was no need of a label to describe the category. The first specialized English-language pulps with a leaning towards the fantastic were "Thrill Book" (1919) and "Weird Tales" (1923), but the editorial policy of both was aimed much more towards weird-occult fiction than towards sf." Major American science fiction magazines include "Amazing Stories", "Astounding Science Fiction", "Galaxy Science Fiction", "The Magazine of Fantasy & Science Fiction" and "Isaac Asimov's Science Fiction Magazine".