Muumi ja punainen pyrstötähti

The film was edited, compiled and reframed from the material originally filmed for the Polish stop motion animated series Die Mumins (1977) in 1977-1982. The series was mostly filmed in layers, with Moomin puppets separated from the other animated objects painted on glass plates in the foreground and background. The producer Tom Carpelan says that the original material suited well for stereoscopic 3D conversion since it's almost like the series was intended to be that way. "Moomins and the Comet Chase" was one of the first feature films produced in 3D in Scandinavia (and the first in Finland). The other was Danish film Die Olsenbande in feiner Gesellschaft (2010) (Olsen Gang Gets Polished), released in the same year.

In the opening credits of the Finnish language version, Tove Jansson's original novel is misspelled as "Komeetta ja pyrstötähti". "Komeetta" and "pyrstötähti" are synonyms, both meaning "comet" in Finnish - so the nonsensically misspelled title would translate as "The Comet and the Comet". The novel's correct Finnish title is "Muumipeikko ja pyrstötähti" (Moomintroll and the Comet).

Edited from Die Mumins (1977)