Astronomy 'Olympics' is being hosted in Africa for the first time: Four big talking points

Cutting-edge telescopes, gravitational waves, black holes and our solar system's central star, the sun, are just a few of the topics that will be on the table in Cape Town, South Africa, for an event that's a scientific version of the Olympic Games--though the world's leading astronomy researchers in attendance will be showcasing their brains rather than their brawn.