When Galileo introduced the telescope as a tool to peer into the galaxies, his contemporaries did not believe him. Scoffing, they refused to even look through the device. Galileo sat alone with his telescope. He was the sole observer of the vastness of the cosmos. A single witness of galaxies beyond anything anyone had seen or imagined. Galileo had the stars to himself.

Undermining Aristotle’s previous explanations of the universe, Galileo published his own findings based on what he’d seen through the telescope. He painted a picture for the entire world through words, a display of the heavens scratched across bound pages. He wrote about mountains and craters on the moon, spots upon the sun, satellites orbiting Jupiter, and multitudes of stars never known to exist.

These were monumental discoveries that would shape future space explorations, but they fell on ears refusing to hear and eyes refusing to see. Galileo’s peers mocked him and his toy. Strictly adhering to Aristotle’s descriptions of the universe, they refused to believe anything contrary to what they had held to for so long.