Browsing: Planet Formation

Planet formation is the process by which celestial bodies are formed in circumstellar disks around stars. This process typically begins with the collapse of a giant molecular cloud, leading to the formation of a star surrounded by a rotating disk of gas and dust, known as a protoplanetary disk. Over time, particles in the disk collide and stick together, forming clumps that gradually grow into larger bodies through a process known as accretion. The initial stages involve the formation of small, solid particles that coalesce into planetesimals, which are the building blocks of planets. These planetesimals then combine to form protoplanets, and through further collisions and accretion, they can grow into fully-fledged planets. This process can result in the creation of various types of planets, including terrestrial planets, gas giants, and ice giants, depending on their distance from the star and the composition of the protoplanetary disk. The study of planet formation is crucial for understanding the formation of our own Solar System as well as the numerous exoplanetary systems discovered in recent decades.