The Cassini spacecraft has taken a picture of Earth and its moon from out near Saturn. It is an evocative one (see above). Taken on 19 July 2013, the picture isn’t the first of its kind. We’ve had the famous Pale Blue Dot picture taken by Voyager in 1990. And the Cassini picture will be added to with other things eventually. Photo time is precious out near Saturn, and there is much work for the spacecraft to do. But this is what we have so far. Earth is the bright shiny bit in the middle; the smaller dot is the Moon. (Picture courtesy of NASA).
It stirs my blood that this picture captures every single one of the 7 billion people on Earth. Everything we’ve done, everything we’ve achieved, all the stupid mistakes we’ve made, all of history, and all of life as we know it, happened on that tiny bit of dirt in the immensity of space.
It is hard to look at this picture and not feel conflicted. On the one hand, we have an overwhelming sense of isolation and insignificance. The universe is so big it contains absolutely everything there is. It is so bizarre we are only just beginning to understand how bizarre, much less comprehend its weirdness and explain it. And there we are, so small that if you dropped into the Cosmos randomly, the chances of being anywhere near enough to even notice the Earth exists are not far removed from infinity to one against. It is hard to accept that some god or gods created this enormity and then made Earth so utterly pointless.
On the other hand, the picture tells me we are utterly amazing creatures. The very fact that we can take this picture, or the Pale Blue Dot or any of the others, is an indication of just how bloody brilliant we are when we try.
If we are the only sentient beings in the universe, as Carl Sagan pointed out, then we have an enormous responsibility to get things right before we become extinct. If the universe has life other than us in it, then it must be so far away the chances of ever meeting it are next to none. If the universe is teeming with life, then what a magnificent opportunity to “join the club”.
It’s a shame, then, that we waste so much time on dumb things. Being sentient takes its toll. The fact that we can think makes us think we are enormously important. We are selfish, wanting to be important, successful and meaningful. We only have one shot at this, so we want it to work. Evolution has required us to be competitive, and we are, to the point of destroying others and ourselves. To the point of screwing up the little we have. People invent gods because they are frightened of oblivion and because they require meaning (even if most religions say we are incapable of understanding god’s plan anyway). We worship technology because it is a way of learning about the universe and also because it helps to provide the instant gratification our short, violent lives require. We fight among ourselves because the orthodoxies we embrace only make sense if others believe them too. We have to feel special, so we make sure everyone else suffers.
But then we go and take this picture, and suddenly it all gets put into perspective. We are both insignificant and mind-bogglingly amazing at the same time. For a little patch of over-emotional DNA, we haven’t done that badly. The more people come to appreciate a picture like this, the more hope there is that we come to terms with it.
Is destroying this beautiful blue little world worth being selfish? Is the brief glimmer of life you have worth wasting on triviality? I’m not asking everyone on Earth to achieve greatness. There isn’t room for that.
But try, ok?