How good is the Science in Science Fiction films?

[Mav]

In one of the newer Star Wars films there is a huge explosion in space.....you can see it, but you can't hear anything until the shock wave comes to you.
When this was first played in America, they would get multiple complaints about the sound dropping out at that point.
It was in fact the most realistic space explosion that probably ever been on film, yet people complained because.....well....they don't understand physics. Hollywood has taught them 'new laws'.

I have a dim memory that there was a time when Aussie filmmakers were warned off using the sound of the Kookaburra as Hollywood had hijacked it as a stock sound in jungle settings (e.g. Tarzan). The fear was that audiences would be wondering how Toucans ended up in Australia.