It strikes me heroic as only heroic can be that the splendid wee Mars lander, Opportunity, bimbles off into the wide yonder, yodelling back across 33.9 million miles (that’s on a close day) images of unearthly clarity.

NASA, obviously knowing of what it speaks, describes the ghost as a Dust storm. While ghosts are not generally attributed with shadows, neither are mini-cyclones. Modal logic would allow that if one, then the other: no?

Thus, let imagination ricochet from every shiny facet of cheerful  wonder on a solitary, shuffling object – which I’m fairly sure chats to itself as merrily as R2-D2 – and allows us to observe that which cannot be seen, a ghost beyond the machine.