GENERAL KNOWLEDGE

Detailed explanation-1: -The smaller masses quickly cooled to become solid bodies, called planetesimals. As their orbits crossed, the larger bodies grew by absorbing the planetesimals, thus becoming planets.

Detailed explanation-2: -These planetesimal collisions cause the planetesimals to increase in size. Planetesimals eventually become planets after they are large enough to have a solid core and orbit. The planetesimal hypothesis suggests that planets form through the accretion of particles in the same orbit through collisions.

Detailed explanation-3: -The dust particles in this disk collided with each other and formed into larger bits of rock. This process continued until they reached the size of boulders. This gradual buildup-a process called accretion-eventually formed the planets of our solar system.