There’s something deeply moving about Voyager 1 still beeping away out there in the cosmic darkness, nearly fifty years after it left Earth. Every signal it sends back is like getting a postcard from your mate who’s been backpacking for decades and somehow keeps finding wifi in the most remote corners of the universe.

The engineering marvel of it all really gets to me. Here we have a spacecraft built with 1970s technology – we’re talking about the era when a pocket calculator was cutting-edge – and it’s still functioning beyond anything its creators dared to imagine. It’s like finding your old Nokia 3310 in a drawer and discovering it still has three bars of battery life and can somehow receive text messages from Alpha Centauri.