Peter's Merry Space-Flight(1963)

Professor Leo has a surprise for Peter’s birthday: a spaceship. Peter, along with his uncle Kati and their little doggie, set off on a fun trip through space. They soon find themselves tangled up in all sorts of adventures: they produce rainbow raindrops in a cloud, they play ball on the Big Dipper, take a merry-go-round trip on the rings of Saturn...