Demonstrator follows remote broadcast, causing outburst from Sky (6,6)

'outburst from sky' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.

'demonstrator follows remote broadcast' is the wordplay.
'demonstrator' becomes 'shower' (I've seen this before).
'follows' is a charade indicator (letters next to each other).
'broadcast' indicates an anagram (letters scattered or cast around).
'remote' with letters rearranged gives 'meteor'.
'shower' put after 'meteor' is 'METEOR SHOWER'.

'causing' is the link.

Can you help me to learn more?