A weapon, we hear, went high in the sky (6)
I believe the answer is:
soared
'went high in the sky' is the definition.
The definition and answer can be both related to change as well as being past participle verbs.
Maybe you can see an association between them that I can't see?
'a weapon we hear' is the wordplay.
'a weapon' becomes 'sword' (sword is a kind of weapon).
'we hear' indicates a 'sounds like' (homophone) clue.
'sword' is a homophone of 'SOARED'.
Can you help me to learn more?
(Other definitions for soared that I've seen before include "Rose high in flight like bird" , "Flew upwards or high in the sky" , "Rose high into the air" .)