Live: Rosetta probe collides with comet 67P, ends 12-year mission

#Live: #Rosetta aircraft crashes on a comet it has stalked for over two years, ending a 12-year mission. Rosetta is the first craft to enter the orbit of a comet and to deploy the first probe to land on a comet. Rosetta and its Philae lander are seen to have greatly improved the human understanding of comets. #FacebookLive

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