"Astral Plane" is the twenty-fifth episode of sixth season of the American animated television series Adventure Time.

By a campfire at the forest, Finn wonders why people have pets, describing their existence as worshipping their owners in exchange for food, water, and shelter.

Before he and Jake go to bed, Finn sees a bright star in the night sky and wonders if anybody lives on it.

Meanwhile, the comet is revealed to be a spaceship crewed by Martin (of the season premiere), who prepares for a crash land on Earth.

Tamaki said that her comics career prepared her for her work as a storyboard artist on the episode in terms of the amount of drawings necessary.

[7] Lexi Pandell of Wired called it a standout episode from the sixth season, as well as one to watch while binging the show.

The heaviness of this theme, Sava said, is "surrounded by goofy high jinks and fantastic visuals that keep the story light and fun".

He said the visuals have "an ethereal quality that is closer aligned with Tamaki's graphic sensibility", while the animation has "the detail of her comic-book art".