Celestial events are trickily specialised not requiring potential aid (8)

I believe the answer is:

eclipses

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'celestial events' is the definition.
'eclipses' can be an answer for 'events' (eclipse is a kind of event). I am unsure of the 'celestial' bit.

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for eclipses that I've seen before include "Makes obscure" , "Blockings of light from one celestial body by another" , "Temporary disappearances of a heavenly body" , "blackouts" , "that are regularly over our heads" .)

I've seen this clue in The Telegraph.

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