Image Cache: The New York Public Library is a treasure trove of public domain images. Among them are the Trouvelot Astronomical Drawings, which have images of space as observed throughout the late 1800s. Above is Mars from 1877, which looks less like we see in NASA images and more like an artist's impression an octopus stuck in a fishbowl. Browse through the cool photos, animations and diagrams in Gizmodo's Image Cache here.
Here are a few more, all of them wonderfully weird and beautiful:
Image: From the New York Public Library
While you can see more here, we'll end with this almost anatomical rendering of sun spots:
All Images: From the New York Public Library