31 months of hibernation, the European comet-spacecraft "Rosetta" behind in order to save energy for their upcoming task. Now they should contact from the depths of the solar system again.

At the European spaceport Esoc in Darmstadt, where the sign of life is due to arrive, the engineers are eagerly whether the probe has forced break of two and a half years unscathed.
Rosetta is on a special mission. The one billion euro expensive spacecraft has opened in March 2004 to visit a comet for the first time and there sell a refrigerator-sized, developed in Germany, daughter of the probe. After flybys of Earth, Mars and the asteroids Steins and Lutetia, Rosetta led course in the depths of the solar system.