Star treading carelessly (3,5)

I believe the answer is:

red giant

'star' is the definition.
(I've seen this before)

'treading carelessly' is the wordplay.
'carelessly' is an anagram indicator.
'treading' anagrammed gives 'RED GIANT'.

(Other definitions for red giant that I've seen before include "Type of star" , "Cool, immense star of high luminosity" , "Huge Communist" , "Megastar" , "Large, cool bright star" .)

I've seen this clue in The Times.

Want a hint initially instead of a full solution? Install my app