public domain elements

<n>A New Constellation</n>, an illustration by artist <n>Sewell Collins</n> from 1910.

Cover of <n>Les fleurs animées</n>, illustrated by <n>J. J. Grandville</n> and published in 1867.

<n>A Celestial Eye, viewing the Objects of the Creation</n>, an engraving by <n>Thomas Wright</n> from 1750.

Illustrations of <n>Diatoms</n> from Plate 130 of <n>Adolf Schmidt</n>'s <n>Atlas der Diatomaceenkunde</n>, 1890.

An illustration of <n>Leptomedusae</n> jellyfish by <n>Ernst Haeckel</n> from his book <n>Kunstformen der Natur</n>.

Illustration from <n>Bernard de Fontenelle</n>'s 1686 book, <n>Entretiens sur la pluralité des mondes</n>.

<n>Plate XVII</n> from <n>Thomas Wright</n>'s 1750 book <n>An Original Theory or New Hypothesis of the Universe</n>.