Nicolaus Copernicus, the Polish priest and astronomer who proposed that the Earth orbits the Sun, has been reburied with honors at Frombork Cathedral in Northern Poland, five centuries after he advanced his then-controversial theory. His remains had previously lain in an unmarked grave beneath the cathedral’s floor. The reburial is the culmination of a six-year effort, initiated by a local bishop, to locate the astronomer’s remains and identify them using forensic reconstruction and DNA analysis.