Buzz Aldrin and Lois Driggs Cannon

Buzz Aldrin and his third wife, Lois Driggs Cannon, are divorcing after 23 years, People reports.

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The astronaut and Dancing with the Stars alum filed papers at Los Angeles County Superior Court on Wednesday, citing "irreconcilable differences." The couple separated on Tuesday, according to the documents.

Aldrin, 81, and Cannon wed on Valentine's Day in 1988. They have no children.