Updated: December 23, 2025

The Jupiter-2 is the iconic flying saucer spaceship from the Lost in Space franchise, famous for getting Lost in Space with the Robinson family. While its design is a classic "flying saucer" shape with a dome on top, the specific details and even its size have varied across different versions of the show, movie, and Netflix series. It was originally designed for a five and a half year mission to Alpha Centauri but became a vessel for endless adventures.