The ‘Prime Meridian’ that’s been running through the Royal Observatory at Greenwich, UK, since 1884 is now located 335 feet (102 meters) east of its historic spot. Dr Ken Seidelmann from the University of Virginia and his colleagues investigated the cause of this apparent discrepancy. The Airy meridian marked as the ‘Prime Meridian of the World’ (dotted line), and the modern reference meridian indicating zero longitude using GPS (solid line)....
