We are spoiled rotten by easy access to georeferenced Martian photography, but mosaics weren’t always that easy. In the days before computer processing and seamless stitching, mosaics were constructed by Patricia “Patsy” Conklin and people like her.
Isaac Newton laid out the physical ballistic requirements to hit the moon with a gun in his famous Cannonball thought experiment. Since Newton, and for years before him, humans have relentlessly sought to shoot the man in the moon in his big, smirking face. Now, we've nearly figured it out.