College Algebra & Trigonometry, 2018a

On the cover:
A colored version of the Flammarion Engraving. The black and white version of this engraving was included
in the 1888 book by Camille Flammarion L’Atmosphère - Météorologie Populaire, which was a book
for general audiences on meteorology. The original engraving was captioned: “Un missionaire du moyen
âge raconte qu’il avait trouvé lepointoù le ciel et la Terre se touche...” This translates as “A missionary
of the Middle Ages told of how he found the point where the sky and the earth touch...”
The Flammarion Engraving is often interpreted as representing the human quest to discover the inner
workings of the universe. This colored version is from the Wikimedia Commons and is credited to Hugo
Heikenwaelder.