Space opera is a subgenre of science fiction that emphasizes and is part of the general thematic genre science fictional space warfare with use of melodramatic risk-taking space adventures and chivalric romance. Set mainly or entirely in outer space it features technological and social advancements (or lack thereof) in faster-than-light travel, futuristic weapons and sophisticated technology on backdrop of galactic empires and interstellar wars with fictional aliens often in fictional galaxies. The term has no relation to music, as in a traditional opera, but is instead a play on the terms "soap opera", a melodramatic television series, and "horse opera", which was coined during the 1930s to indicate a clichéd and formulaic Western movie. Space operas emerged in the 1930s and continue to b