Of Stars and Men
Of Stars and Men is a 1964 animated film from the Hubley family of animators, based on the 1959 book of the same name by astronomer Harlow Shapley, who also narrates. Made in the style of a documentary, it tells of humankinds quest in the form of a child to find its place in the universe, through themes such as outer space, physical matter, the meaning of life and the periodic table. There are no character voices instead, they talk through their actions. It has been cited as an example of an animated documentary.
Source: Wikipedia