Rosetta’s First Peek at the Comet’s Dark Side
Since its arrival at comet 67P/Churyumov-Gerasimenko, the European Space Agency’s Rosetta spacecraft has been surveying the surface and the environment of this curiously shaped body. But for a long time, a portion of the nucleus — the dark, cold regions around the comet’s south pole — remained inaccessible to almost all instruments on the spacecraft. […]