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Rosetta awake: Comet-chaser into next stage of mission

20 January 2014 Last updated at 23:49 GMT

The successful "waking up" of the European Space Agency's comet-chasing spacecraft, Rosetta, means the craft is ready for the next stage of its mission.

Engineers will now finesse the probe's trajectory and prepare its instruments for the planned encounter with the surface of a 4.5km-wide comet in November.

David Shukman reports.

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