Jonathan Amos in Rosetta's Darmstadt control room
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'Game is on' for Rosetta spacecraft

The BBC's Jonathan Amos explains what comes next for the Rosetta comet-chasing probe, after it successfully wakes from hibernation.

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.

A signal confirming its alert status was received by controllers in Darmstadt, Germany, at 18:16 GMT.

Rosetta has spent the past 31 months in hibernation to conserve power as it arced beyond the orbit of Jupiter on a path that should take it to Comet 67P/Churyumov-Gerasimenko in August.

Jonathan Amos reports.