The night sky helps explorers find their way. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3289661/free-photo-image-chihuahua-mexico-astronomy-brown-backgroundFree Image from public domain licenseCattle pass sign near Bridgeport, New York. Sourced from the Library of Congress. https://www.rawpixel.com/image/12286069/photo-image-cow-sticker-skyFree Image from public domain license