Far-off eruption shocking for all ears (5,5)

I believe the answer is:

solar flare

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'far-off eruption' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.

'shocking for all ears' is the wordplay.
'shocking' indicates anagramming the letters (letters shocked or shaken).
'for'+'all'+'ears'='forallears'
'forallears' anagrammed gives 'SOLAR FLARE'.

Can you help me to learn more?

(Another definition for solar flare that I've seen is " Eruption from the sun".)

I've seen this clue in The Telegraph.

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