Migration of Rocks, Planets and Hurricanes in Protoplanetary Discs

Planets form in discs of gas and dust around young stars. Since the discovery of the first extrasolar planet around a solar type star, a gas giant planet on an orbit of just a few days, it has become apparent that orbital migration should play a major role during planet formation. While planet migration is able to explain this new class of planets, the Hot Jupiters, theoretical migration rates were alarmingly fast, essentially predicting that *all* gas giant planets should be Hot Jupiters. I will discuss the latest insights in planet migration, and show   that recent progress allows for slower migration rates. At the same time, new types of migration keep showing up, indicating that all planetary building blocks, from the very small to the very large, are very mobile inside protoplanetary discs.