Alien-seeking agcy

• "The X-Files" org.
• Subj. for a radio astronomer
• Org. concerned with visitors from afar
• Org. with a Carl Sagan Chair for the Study of Life in the Universe
• Astrobiologists' org.
• Alien-seeking program: Abbr.
• Bristle: Prefix
• ___ Institute (astronomers' org.)

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