When power and fury combine, shoot for the stars! (6)
I believe the answer is:
aspire
'combine shoot for the stars' is the definition.
I can't judge whether this definition defines the answer.
'when power and fury' is the wordplay.
'when' becomes 'as' (eg 'when I walked' means 'as I walked').
'power' becomes 'p' (symbol in physics).
'and' says to put letters next to each other.
'fury' becomes 'ire' (ire is intense rage).
'as'+'p'+'ire'='ASPIRE'
Can you help me to learn more?
(Other definitions for aspire that I've seen before include "Have ambition or desire for praise" , "Is a rep (anag.)" , "Earnestly desire (to achieve something)" , "Direct one's hopes and ambitions" , "Have a strong desire to reach an objective" .)