Spot on

2019-03-06 02:01:25

By Nicola Jones A TRAWL through two ancient texts written almost a thousand years ago has unearthed a link between sunspots and an aurora sighted at roughly the same time on opposite sides of the Earth. The link shows that solar activity hit a peak in 1128, and lends credence to the observations of medieval astronomers. Richard Stephenson, a physicist from the University of Durham, noticed a picture of sunspots in The Chronicle of John of Worcester,