Special Issue -- Rosetta Begins Its Comet Tale

This special issue of Science highlights new data from the Rosetta spacecraft, which is currently in close orbit around the Jupiter family comet known as 67P. The spacecraft, which receives funding from the European Space Agency, NASA, and other member states, dropped its lander, Philae, off on the surface of the comet in November -- an event that was celebrated in Science’s 2014 Breakthrough of the Year.