Cat returns to eat lion, maybe seen via satellite (7)
I believe the answer is:
moonlit
'seen via satellite' is the definition.
'cat returns to eat lion maybe' is the wordplay.
'cat' becomes 'tom' (a tom is a male cat**).
'returns' is a reversal indicator.
'to eat' is an insertion indicator.
'maybe' indicates an anagram.
'tom' back-to-front is 'mot'.
'lion' is an anagram of 'onli'.
'mot' going around 'onli' is 'MOONLIT'.
(Other definitions for moonlit that I've seen before include "Tom lion (anag)" , "gently enlightened?" , "like the bank Jessica used?" , "Illuminated by night" , "like Titania's unlucky meeting" .)