This may be one of the most important photographs in human history. This is a photograph of our planet taken at a distance of 6 billion kilometers by the Voyager 1 probe in 1990. Later, inspired by this image, physicist Carl Sagan wrote: "Look at this point again. This right here. This is our home. This is us. Everyone you love, everyone you know, everyone you’ve heard of, every human being who has ever existed, has lived their life in it. The multitude of our joys and sufferings, a thousand religions, moralistic economic ideologies and doctrines, every hunter and collector, every hero and coward, every builder and destroyer of civilizations, every king and peasant, every couple in love, every mother and father, every brilliant child, inventor and explorer, every ethics teacher, every lying politician, every "superstar", every "supreme leader", every saint and sinner in the history of our species lived here, in a speck of dust suspended in a sunbeam. The Earth is a very small stage in a vast cosmic stage. Think of the Rivers of blood shed by all these generals and emperors, so that, in glory and triumph, they could become short-term masters of a fraction of a grain of sand. Let's think of the endless cruelty inflicted by the inhabitants of one corner of this point to the hardly distinguishable inhabitants of another corner. How often they disagree, how eager they are to kill each other, how intense their hatreds are. Our postures, our imaginary importance, the illusion of our privileged status in the universe: all of that is useless at this pale point of light. Our planet is nothing but a solitary moth in the surrounding cosmic darkness. In this vast emptiness there is no indication of someone coming to our aid, to save us from our ignorance. The Earth is the only world known so far -
