Europe's comet-chasing space probe Rosetta dipped out of orbit Friday with a slow-motion crash onto the icy surface of the alien world it's been following for more than a decade. Its final radio ...

In a surprising twist to our understanding of comets, mysterious radio signals have been detected emanating from comet 67P/Churyumov–Gerasimenko. These signals, recorded at frequencies between 40 and ...

ESA’s Rosetta spacecraft and its Philae lander delivered the first close-up study of a comet’s surface and composition. At comet 67P⁄Churyumov–Gerasimenko, the mission uncovered complex organic ...