“Rosetta and Philae at comet (11206660686)” by European Space Agency – Rosetta and Philae at comet. Licensed under Creative Commons Attribution-Share Alike 2.0 via Wikimedia Commons – http://commons.wikimedia.org/wiki/File:Rosetta_and_Philae_at_comet_(11206660686).jpg#mediaviewer/File:Rosetta_and_Philae_at_comet_(11206660686).jpg