NEW DELHI: It is time to bid final good bye to the Philae lander, a fridge-sized machine that landed on Comet 67P/Churyumov-Gerasimenko on November 12, 2014, the European Space Agency (ESA) announced on Friday. Silent since its last call to mothership Rosetta seven months ago, the Philae lander is facing conditions on the comet from which it is unlikely to recover, ESA said. Rosetta, which continues its scientific investigations at the comet until September before its own comet-landing finale, has in recent months been balancing science observations with flying dedicated trajectories optimized to...