Popeye the Sailor - Season 1 - Eps 67: Out of This World
Popeye uses The Professors time machine to take Olive, Swee' Pea and himself on a trip to the moon. When there they find it's just like earth. .. No reason is given to how or way it's no longer populated by little cheese people, presumably the moon men killed them all and stole their land.
About Popeye the Sailor

Title: Popeye the Sailor
First Air Date: 1960-06-10
Last Air Date: 1963-05-05
Status: Ended
Rating: 7.107/10 (from 370 votes)
Language: EN
Seasons: 2
Total Episodes: 230
Network: ABC
Genres: Animation, Kids
Production Companies: King Features Syndicate
Synopsis
Follows the adventures of the famed spinach-eating sailor man. Popeye is one of the most popular cartoon characters of all time. This spunky but loveable spinach-eating sailor continues to delight young and old with his comic adventures, and the entire gang is around to provide plenty of rousing fun and action: Olive Oyl, Swee'Pea, Wimpy and Bluto.
Cast

Jack Mercer
Popeye (voice)

Mae Questel
Olive Oyl (voice)

Jackson Beck
Brutus (voice)