So - the Rosetta spacecraft - the one that's been in hibernation in deep space until they woke it up in June for a special mission.
Here's the Graundian page - with the background info
http://www.theguardian.com/science/2014/aug/05/rosetta-spacecraft-rendezvous-rubber-duck-comet
But then there's a link to give an interactive simple explantion with circles and blobs
http://interactive.guim.co.uk/embed/pallen/2014/aug/rosetta/rosetta_comet.html
But then there's another link which shows how it's all happening and it's all very Star Trekish (that's the original Star Trek, way back when .....)
http://www.esa.int/spaceinvideos/Videos/2014/01/Rosetta_s_orbit_around_the_comet
I hope the beautiful dance goes according to the choreography.
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My body is an old warehouse full of declining storage, my mind is a dusty old reference library, strictly for members and archaeologists only