Potential answers for "U.S. agency that studies black holes"

⭐⭐⭐⭐ NASA
⭐⭐ EPA
⭐⭐ DAR
⭐⭐ ABYSSES
⭐⭐ IRS
⭐⭐ ONYX
⭐⭐ AMA
⭐⭐ STARS
⭐⭐ OPALS

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