SOLAR SYSTEM

Detailed explanation-1: -Chamberlin proposed their planetesimal hypothesis. This hypothesis suggests that initial solar debris was created by a star narrowly passing the sun, resulting in the release of material. This material then began to orbit the early sun. During orbit, the debris collided and combined creating planetesimals.

Detailed explanation-2: -Dust grains build up to form planetesimals, and planetesimals merge to form protoplanets.

Detailed explanation-3: -Dust clumps become pebbles, pebbles become larger rocks that grind together to expand. The presence of gas helps particles of solid material stick together. Some break apart, but others hold on. These are the building blocks of planets, sometimes called “planetesimals."

Detailed explanation-4: -Within the solar nebula, scientists believe that dust and ice particles embedded in the gas moved, occasionally colliding and clumping together. Through this process, called “accretion, ‘’ these microscopic particles formed larger bodies that eventually became planetesimals with sizes up to a few kilometers across.

Detailed explanation-5: -Planetesimals /plænɪˈtɛsɪməlz/ are solid objects thought to exist in protoplanetary disks and debris disks. Per the Chamberlin–Moulton planetesimal hypothesis, they are believed to form out of cosmic dust grains. Believed to have formed in the Solar System about 4.6 billion years ago, they aid study of its formation.