5 things to know for June 17: Severe weather, G7 summit, Georgia election, economy, small plane crash

By Alexandra Banner, CNN Astronomers may have finally cracked one of the most baffling mysteries about the Milky Way after decades of research. The breakthrough points to a supermassive black hole lurking at the center of our galaxy. Here’s what else you need to know to get up to speed and on with your day.