Crossword puzzle clue "sign of alien life some say"

Here are the possible solutions for sign of alien life some say clue

Answer
Clue
Relevancy
cropcircle
Clue
Sign of alien life, some say
zoesaldana
Clue
Player of a green alien in "Guardians of the Galaxy" and a blue alien in "Avatar"
cropcircles
Clue
Alien art form, some say
ets
Clue
Alien life forms, for short
seti
Clue
Scientific project seeking contact with alien life
Org. looking for alien life
Acronym of a scientific project seeking contact with alien life
nanunanu
Clue
Alien sign-off

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