Use superscripts in R axis labels

Question

Using base graphics in R, how can I add superscripts to axis labels, as one might want to when plotting latitude and longitude axes on a map.

Consider this example:<

Answer 1

@The Thunder Chimp You can split text in such a way that some sections are affected by super(or sub) script and others aren't through the use of *. For your example, with splitting the word "moment" from "4th" -

plot(rnorm(30), xlab = expression('4'^th*'moment'))