Abstract

The classical theory of planet formation was conceived when our knowledge about planets was confined to the Solar System alone. In recent years, the numerous discoveries of planetary systems orbiting stars other than the Sun have dramatically transformed this landscape. In this talk, I will discuss the key constraints on planet formation we gathered not only by studying the exoplanet population, but also from the ever-improving observations of circumstellar disks, and the ultraprecise measurements of the Solar System samples. I will outline the emerging paradigm of planet formation, in which the centimeter-sized dust aggregates, colloquially known as pebbles, take center stage. Finally, I will discuss the most puzzling open questions we still have about the planet formation process.