Two articles on extremely noble goddess (6)
I believe the answer is:
athene
'goddess' is the definition.
(Greek goddess)
'two articles on extremely noble' is the wordplay.
'two articles' means two substitutions for 'article'.
'article' becomes 'a' (English indefinite article).
'article' becomes 'the' (the definite article in English).
'on' is a charade indicator (letters next to each other) (in a down clue, letters appear on others).
'extremely' suggests removing the centre (only the extremes of the word are used).
'noble' with its middle taken out is 'ne'.
'a'+'the'+'ne'='ATHENE'
(Other definitions for athene that I've seen before include "Pallas -, Greek goddess of wisdom" , "Wise woman" , "patroness of the arts!" , "Minerva was Roman counterpart of this goddess" , "deity" .)