yuri vendik, bbc news, nagorno—karabakh.t, but even a meticulously planned rocket launch can be delayed by the one thing we can't control — the weather! the four astronauts are preparing to make the first operational crewed flight, using a privately owned spacecraft. simon king has been speaking to those who provide that crucial forecast. ignition, lift off! may 2020, and two nasa astronauts on their way to space in the new spacex crew demo programme. the day before, the launch had been aborted, with just 17 minutes to lift off. all because of the one thing we can't control. we continue to violate a couple different weather rules that we now do not expect to clear in time to allow for a launch today. but who are the weather forecasters that make the critical decisions for a space launch? our role, the 45th weather squadron, is pretty huge in what we do in the space industry. essentially, at the cape, nothing gets to space without our support. and so we're talking launch vehicles, keeping those safe, protecting all of our ass