Earth Saves the Universe

"Earth Saves the Universe" will be the 51st and final episode of Season 1 and the 51st episode of World in the Universe, as well as the first season finale of World in the Universe. It will be the third half-hour episode, following "The Universe Begins" and "Atmosphereless". Like "The Universe Begins" and unlike "Atmosphereless", it has two parts, Part 1 and Part 2 and the production code is 127A for Part 1 and 127B for Part 2. It will air on October 26, 2024.

Part 1
The entire universe is at risk by an unknown neutron star and Earth thinks he is the only object who can save the whole universe.

Part 2
A dangerous neutron star is risking the universe. Earth is trapped by his enormous gravity. The rest of the Solar Siblings help Earth escape and save the universe and defeat Alcatraz before it's too late.

Trivia

 * Alcatraz – A neutron star's name is a reference to a small island off the San Francisco coast called Alcatraz Island, which is located on San Francisco Bay. It can also be referenced to a former prison named Alcatraz Federal Penitentiary on the same island, which only existed from 1934 to 1963.
 * This is the third and last half-hour (22-minute) episode of Season 1 as well as the third of World in the Universe, following the show's first episode "The Universe Begins" and the second half-hour episode "Atmosphereless".
 * Like "The Universe Begins", whose production code is 101 (101A for Part 1 and 101B for Part 2), and unlike "Atmosphereless", which has no two parts and is a completely 22-minute episode and its production code is 115, "Earth Saves the Universe" has two 11-minute parts and its production code is 127 (127A for Part 1 and 127B for Part 2).
 * This episode will air on October 26, 2024 on Sintopia and Nickelodeon. It is made to celebrate the first anniversary of World in the Universe.
 * This episode will be directed, storyboard, and written by Jordan Cassatt and Kimberly Blanding of World in the Universe.
 * It will be also directed by cartoonist Stu Livingston, written by Matt Braly and Derek Kirk Kim of the Disney Channel series Amphibia, and storyboard by Dana Terrace, creator of another Disney Channel series The Owl House.
 * Jordan Cassatt nickname this episode the "memorizable production moment of Interstate Loud", which is the Season 1 finale half-hour episode of Intertropolis & Routeville, another television series created by him and Kimberly Blanding.
 * Kimberly Blanding said this is one of the best moments of her and Jordan's production careers, similar to that of Intertropolis & Routeville 's episode "Interstate Loud".