Interviewing a spacecraft isn't something one does every day. It certainly wasn't an option back in the late 1970s, when Voyager 1 and 2 set off on a mission like no other before or since: to visit ...

We live in a world defined by inches, feet and miles (or centimeters, meters and kilometers, if you prefer), and it’s not difficult for most of us to comprehend sizes and distances given in these ...