Príncipe eclipsed: commemorating the confirmation of Einstein's theory of general relativity

This article reflects on the West African island of Príncipe as the venue of one of the most significant events in 20th century science, the confirmation of Einstein's General Theory of Relativity during an eclipse expedition led by Arthur Eddington. It takes as its starting point the 2009 commemoration of the event, involving international institutions promoting scientific knowledge and tourism, and overlays this with another, colonial history of Príncipe as the focus of a controversy around the alleged use of slave labour in its early 20th century cocoa plantations. What is the anthropologist's license in problematising the commemoration, and what are the specific ethnographic insights afforded by this unique event?