Lies
They are called planetesimals. These small bodies collided and merged to form larger bodies like planets and moons during the early stages of the solar system's formation.
This process is called accretion. It involves small particles like rocks, gas, and dust clumping together due to gravity and sticking to each other to form larger bodies like planets. Over time, these bodies continue to collide and grow in size until they become fully formed planets.
Earth and Mars have never collided. They are two separate planets in our solar system that orbit the Sun.
The protoplanet hypothesis describes the formation of planets from the dust and gas present in the early solar system. It suggests that small planetesimals collided and merged to form larger celestial bodies, eventually leading to the creation of the planets we see today.
New material was likely added to planets in a young solar system through processes like accretion and impacts from asteroids and comets. These small bodies collided with the growing planets, contributing to their mass and composition. Over time, these collisions helped shape the planets and their eventual characteristics.
accretion
The eight planets of our system are not considered small solar system bodies, to qualify as a planet in the first place means that they have to be quite large. Small solar system bodies are such things as comets, asteroids, meterorids, moons or minor planets.
It's called accretion.
It's called accretion.
During the accretion phase of the early solar system, small grains of dust collided and stuck together, gradually building up larger and larger bodies through mutual gravitational attraction. These bodies eventually formed planetesimals, which in turn collided to form protoplanets and eventually the planets we see today. The process of accretion shaped the structure and composition of the solar system as we know it.
Planets and moons that orbit the sun are generally referred to as celestial bodies or astronomical bodies in the context of our solar system.
Planets, moons, asteroids.