There are moments of regret in every writer's career: the line we should have used, the word we should have changed. And sometimes it's just a case where time marches on and ruins everything, and that's what happened with Saturn.
My husband came up with the perfect line, and I very much wanted to use it, and then what did GM do? It made Saturns good-looking before I got close enough to a story where I could use it. And so, to my great regret, I never got the chance to use it: Why do they call it a Saturn, when it looks like Uranus?