To be honest, I don't have much of a choice here. I just don't mind it.
Luna is one of the moons of Mars. Folks started colonizing out into space a couple hundred years ago, by my time, because of overpopulation and pollution and stuff. And then a guy built this fusion drive engine so we can go further and do it faster and now some of the outer planets' moons - like Ganymede, that orbits Jupiter - are being colonized too. That's what I do, I work on those engines, keep them in top shape. Though I sort of work on the whole ship, really.