The Rosetta Odyssey
ESA TV Exchanges
Visitors to the space operations centre of the European Space Agency in Darmstadt Germany, have the unique opportunity to see a satellite that is a true twin of one already launched. It does not have its solar wings, but the Rosetta engineering model is identical, in practically all respects, to the probe on its way to rendezvous with a comet.
A WMV preview clip is online under :http://esatv-movies.e-vision.nl/videos/mphi/ROSETTA_DV_17-01-08_wmphigh.wmv
More backgroud information can be found on: http://www.esa.int/esaMI/Rosetta/index.html

For more info on this subject please check the script that is online as a PDF file under :http://television.esa.int/photos/EbS55689.pdf
This is not the correct link to the script: it gives a broken link in the online ESA television online video archive.