Video: Flight director updates status of comet lander

Paolo Ferri, head of mission operations, describes the moment of relief when engineers confirmed the Philae comet lander separated from its Rosetta mothership. But anxiety is building over touchdown after telemetry data raised questions about the status of an important cold gas thruster designed to keep the lander from bouncing off the comet.

When a European landing probe goes for a daring touchdown on a comet Wednesday, officials say it would help to have a little luck on their side.

Scientists culling through images taken last week by the Rosetta spacecraft’s sharp-eyed science camera have finally pinpointed the exact spot the Philae lander settled on comet 67P/Churyumov-Gerasimenko after a daring descent nearly two years ago, the European Space Agency announced Monday.