A big beast stars (5,4)

I believe the answer is:

great bear

'stars' is the definition.
(constellation Ursa Major)

'a big beast' is the wordplay.
'a big' becomes 'great' (I've seen this before).
'beast' becomes 'bear' (bear is a kind of beast).
'great'+'bear'='GREAT BEAR'

(Other definitions for great bear that I've seen before include "star group" , "Major stars" , "Plough constellation" , "'Large ursine in the heavens (5,4)'" , "Large animal - same as 7" .)

I've seen this clue in The Telegraph.

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