A Short Course on Astronomy Poster
This poster comes from the pages of 1871's A Short Course in Astronomy and the Use of the Globes by Henry Kiddie. The caption reads,
There are, therefore, two kinds of planets, namely those that revolve around the sun only—called Primary Planets, and those that revolve around the primaries and with them around the sun—called Secondary Planets or Satellites. Of the latter the moon is an example; since as proved by its apparent motions and phases, it revolves around the earth, every month, and accompanies the later in its annual motions around the sun.
Our posters are printed on acid-free matte-bright white photo paper.
Available Size: 24"x18"