Danger: IT could become a significant part of our universe (3,5)

I believe the answer is:

red giant

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'a significant part of our universe' is the definition.
I can't tell whether this definition defines the answer.

'danger it could become' is the wordplay.
'could become' indicates an anagram.
'danger'+'it'='dangerit'
'dangerit' is an anagram of 'RED GIANT'.

Can you help me to learn more?

(Other definitions for red giant that I've seen before include "Large low-temperature star" , "big star" , "Large star nearing the end of its life" , "Type of star" , "Large, cool bright star" .)

I've seen this clue in The Times.

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