Welcome to the official star wars youtube channel home to a galaxy of star wars videos including trailers behind the scenes featurettes and original ser. The strategic defense initiative sdi was a proposed missile defense system intended to protect the united states from attack by ballistic strategic nuclear weapons intercontinental ballistic missiles and submarine launched ballistic missiles. Star Wars Theory Youtube Els esdeveniments de star wars tenen lloc en una galàxia fictícia de nom desconegut i en un temps no especificat.