Thanks to German astronomers, we now have the most accurate measurements yet of the giant black hole that sits at the centre of our galaxy.
Black holes are clearly intriguing, and not just to scientists. Earlier today, a colleague known more for his in-depth investigations into the wrongdoings of governments and multinationals than his knowledge of quantum gravity, asked what seems like a simple question: "What's inside a black hole?" Sensing my attempt at an answer wasn't good enough, I called Stefan Gillessen, one of the authors of the latest study, for an explanation.
