From Alex Saragosa, Terranuova Bracciolini, Italy
Richard Swifte suggests resuming research on the movement of Barnard's star to see if it has a planet (Letters, 26 August). The at the European Southern Observatory's 3.6-metre telescope at in Chile is studying the movement of several close stars, among them Barnard's star. Swifte and others can contribute to checking results through the .
