Video: Astronomers at European Southern Observatory film video 'to show they are fun' Staff at the European Southern Observatory (ESO) in Germany, which builds and operates the world's most advanced ground-based astronomical telescopes, released the video as a tribute to their co-workers and to show that the company can "have fun." The video shows dozens of staff singing merrily along to a ESO version of the Kaiser Chiefs' song 'Ruby' with lyrics modified to fit their field of work. In one verse, scientists from ESO can be seen in their laboratories and standing by the telescopes in Chile as they sing: In the desert up high, all our telescopes lie, when the sun sets at night, all the stars come alight, we try hard to find out, what it is all about, there is so much up there, it would be wrong not to care, No one can deny that workers from ESO certainly looked like they were having fun making the video! Video courtesy: YouTube/Simon Lowery