Rosetta Spacecraft to End Mission by Sinking to Its Comet Companion by KENNETH CHANG

By KENNETH CHANG Rosetta, the first spacecraft to orbit a comet, is set to close a successful mission for the European Space Agency on Friday with a soft belly-flop. Published: September 30, 2016 at 08:00PM from NYT Science http://nyti.ms/2dw3x9M