The E-ELT, or European Extremely Large Telescope, is set to be the world's most powerful telescope ever. It's a project of the European Southern Observatory. It's not due to go into operation for about another decade, but the sense of anticipation is already growing.
We take a look at how "the worlds biggest eye on the sky" is coming along. One area that the E-ELT will be focusing on is the mystery of black holes. It will investigate for the first time the closer vicinity around the supermassive black hole at the center of our galaxy. We ask what scientists are hoping to discover and how fundamental their discoveries could be.