For our entire human existence we have been gazing up at the moon and projecting all our hopes, dreams and wishes up there. Whereas for the Earth, the first time humankind got to see our planet in its entirety as a blue marble floating in space was in 1972 with NASA’s Apollo 17 mission. At this moment, our perception and understanding of our planet changed forever. Hanging in the black emptiness of space the Earth seems isolated, a precious and fragile island of life. From a distance, the Earth is just a pale blue dot.