Last year, some of South Africa’s top astronomical researchers were part of an international team that witnessed a world first: the first cosmic event observed in both gravitational waves and light. The waves traced back to an unimaginably violent explosion resulting from a merger of two neutron stars. That explosion 130-million light years away shook our space-time continuum, creating gold in real time. On 24 February 2018, join Professor Petri Vaisanen, director of the South African Astronomical Observatory (SAAO), as he...