What are planetimals?

Answer 1

Planetimals are small celestial bodies that are believed to be the building blocks of planets, formed from dust and gas in the early solar system. These objects typically range in size from a few meters to several kilometers and can collide and coalesce to form larger planetary bodies. Their study helps scientists understand the processes of planet formation and the evolution of planetary systems. Planetimals are considered crucial in the context of protoplanetary disks around young stars.