ESOcast 57: ESOs VLT Celebrates 15 Years of Success

May 25 2013 is an important anniversary for the Very Large Telescope -- it is exactly fifteen years since the first light on the first of its four Unit Telescopes. Since then the four original giant telescopes have been joined by the four small Auxiliary Telescopes that form part of the VLT Interferometer (VLTI). The VLT is one of the most powerful and productive ground-based astronomical facilities in existence. In 2012 more than 600 refereed scientific papers based on data from the VLT and VLTI were publi