Doraemon Movie 02: Nobita no Uchuu Kaitakushi
English title: Doraemon the Movie: The Records of Nobita, Spaceblazer
Japanese title: 映画 ドラえもん のび太の宇宙開拓史
Alternative titles: Doraemon: Nobita's Space Story
Type: Movie
Source: Unknown
Episodes: 1
Status: Finished Airing
Aired: Mar 14, 1981
Duration: 1 hr 36 min
Rating: PG - Children
Studios: Shin-Ei Animation
Producers: TV Asahi
Genres: Adventure, Comedy, Fantasy
Demographics: Kids, Shounen

Nobita has been having a weird dream about a boy named Roppel and his strange companion Chami traveling in space. By a twist of fate, he met them in person where it turns out that they are real and that they were being pursued in space, causing their space vehicle to malfunction, connecting the space vehicle itself with Nobita's room. They journeyed to Roppel's planet and amidst their enjoyment, Nobita and Doraemon pledged to help Roppel's planet free from their oppressors. 

(Source: ANN)