The Rosetta spacecraft is only a few hours from dispatching the automated landing probe Philae onto the comet 67P/Churyumov-Gerasimenko, that has been finally approached on August 2014 after a 10 years voyage. For the first time we are going to touch a Comet Fingers crossed !
You can read more about it here:
http://www.bbc.co.uk/news/science-environment-29995540