This clue appeared in the NYT Crossword on Friday, November 28, 2025 (1 Across). The answer is hidden below until you want it. Friday puzzles are themeless and hard, with clues that are vague on purpose.
How to read this clue
"Abbr." or "for short" means the answer is itself an abbreviation or a shortened form.
Answer length: 4 squares
First letter
I _ _ _
First and last letters
I _ _ S
Show the answer
About the answer
IRAS as a word: (astronomy, NASA) Initialism of Infrared Astronomical Satellite (the first space telescope to perform a survey of the entire night sky at infrared wavelengths.).
IRAS has been an answer once in the NYT Crossword and Mini puzzles we have on file, which go back to October 23, 2025.
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