The first signal received from the Rosetta spacecraft ESA’s Operations Centre in Darmstadt, Germany on 20 January 2014. Rosetta had woken up 807 million km away after 31 months of deep-space hibernation.
Rosetta is chasing Comet 67P/Churyumov–Gerasimenko, where it will become the first mission to rendezvous with a comet, the first to land on a comet and the first to follow a comet around the Sun.
More about Rosetta:
http://www.esa.int/rosetta
http://blogs.esa.int/rosetta