On 23 August 1966, NASA’s Lunar Orbiter 1 took the first photo of Earth from the moon’s orbit, and it forever changed how we see our home planet.
In this day and age, it is easy to be a bit blasé about robotics and remote cameras, but this was all performed without a digital sensor or computer. The image was first exposed onto photographic film, the film developed, and then scanned and transmitted back to earth. All without any digital electronics – pure analog and chemical: