Supermoon (photo taken as it set this morning) – why do the social media and the internet get so excited about the Moon appearing a bit bigger (and brighter) than average? Not that it’s even noticeable unless you observe it regularly against the same objects near the horizon. There’s a perigee (closest to the earth) every month, and a smallest perigee every year – and from year to year the smallest varies by less than about 1000km. That’s less than a third of a percent difference in size in the sky. Yet another reason for me to be a grumpy old man!