Mary Rose cannonballs meet synchrotron X-rays

When Henry VIII’s flagship, the Mary Rose sank off the Portsmouth coast on July 19th, 1545, it was carrying 1248 cast iron cannonballs, all lined up next to each other, ready to be deployed. They slumbered under 14 meters (46 feet) of sediment, a virtually oxygen free environment, along with about 19,000 other artifacts and …