Hoshi wo Katta Hi
English name: The Day I Bought a Star
Genres: Sci-Fi
Type: Movie, Episodes: 1
Aired: Jan 3, 2006
Studio: Studio Ghibli
Source: Original
Rating: G - All Ages
Synopsis:
A young boy, tired of the city, escapes into the country. When trying to bring vegetables to the market to sell, his cart breaks down and he exchanges the vegetables for a mystical seed. Returning home he plants the seed in a normal pot—only to find it growing into a planet.

(Source: ANN)