“The color of the sky characterizes the world. Plop me down on any planet in the Solar System, without sensing the gravity, without glimpsing the ground, let me take a look at the sun and the sky, and I can, I think, pretty well tell you where I am.” - Carl Sagan ![](https://little-paper.s3.us-west-2.amazonaws.com/posts/postImageUrl/0dfc68d3-c28a-44ae-ab62-fbcb91955695)