Crossword Genius

Alien world, as in cosmic phenomenon (5,4)

Ross

I believe the answer is:

solar wind

'cosmic phenomenon' is the definition.
(phenomenon in the cosmos)

'alien world as in' is the wordplay.
'alien' indicates anagramming the letters.
'world'+'as'+'in'='worldasin'
'worldasin' is an anagram of 'SOLAR WIND'.

(Another definition for solar wind that I've seen is " Flow of particles from the sun".)

I've seen this clue in The Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.