The Rosetta-Philae mission was groundbreaking, but Philae’s landing on comet 67P didn’t go as planned. Why did the lander fail to anchor? How did it end up in the wrong location? And what were ...

Europe's robot lab Philae has fallen "silent" on the surface of a comet zipping towards the Sun, said ground controllers Monday who fear it may have shifted out of radio contact. "The lander could ...