This week our family boarded a plane to head home to Ireland after some weeks in America. The airports along the way were full of holiday-makers going this way or that, some just setting out, others returning sporting deeper tans and new sunglasses. Eventually, whenever they all get to wherever it is they call home, they’ll be met by a welcome party of work, school, and responsibilities that have been patiently awaiting them. As the tan lines fade and sunglasses collect dust, the desktop background picture of big smiles in the sand may seem increasingly like a taunt. Or maybe like an impossible invitation: “If only I could live there all the time, I would always be that happy!” The invitation seems to be proven more and more with every holiday.
The longest selfie stick in the history of humanity was 4 billion miles away from home when it took a picture of us. The photo is now famously known as “the pale blue dot”, because it happened to catch our planet as a point of brightness floating in a ray of sunlight. Astronomer Carl Sagan had suggested that NASA take the picture with their Voyager I probe, and he eloquently described the result:
“Look again at that dot. That’s here. That’s home. That’s us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilisation, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every “superstar,” every “supreme leader,” every saint and sinner in the history of our species lived there-on a mote of dust suspended in a sunbeam.”