Crossword Clues for PLANETX

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Clue Source Date
Traveler's flight (X = RIP) Universal 15 Mar 2023
Hypothetical solar system body beyond Neptune New York Times 20 Aug 2020
Hypothetical body in the solar system beyond Neptune New York Times 14 Nov 2018
Hypothetical body in the solar system beyond Neptune
Term coined by Percival Lowell for a hypothetical world beyond Neptune
Quest of the astronomer Percival Lowell
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