The impression that I got from the movie was that, somehow, in the Star Wars universe, there simply aren't "Galactic News Channels". There's no other explanation for how the whole Jedi Temple Go Boom thing could go unquestioned. It seems in the Star Wars universe somehow they've managed to develop instantaneous communication but not an internet - you can contact your Trade Federation homeboys on the other end of the galaxy but you can't go to Jedi.com to get the latest news on all things Force.