Oh, hello. I’ve been rather absent from my blog of late, for a whole plethora of reasons. Normalcy shall be resumed in due course, rest assured. In the meantime, some people may recall a smiley crater on the planet Mars. Well, not to be outdone, another happyface crater has been discovered – this time on the planet Mercury, proving that it’s a happy little world. Ah, it’s so good to see everyone in the solar system getting along so well…

Picture: NASA/Johns Hopkins/Carnegie I.W./Rex Features