no - it depends on the particular launch... russian launches are usually broadcasted on tsenki.com/en (and nasa tv, if it is iss related launch - ie. soyuz and progress spacecrafts)... then nasa launches (iss related, or science related) are streamed on nasa tv... ula launches on ulalaunch.com... european (esa) launches are streamed on arianespace.tv (arianespace.com)... chinese launches usually are not streamed (and if they are, it is broadcasted on chinese television - cctv.cn/cntv.cn) some of the launches are streamed on spaceflightnow.com (ustream.com)... all launches (us, russian, esa, chinese, japan, indian) are text covered on nasaspaceflight.com (with links to live video, insiders info and more sources if available - as live countdown, etc)