SOLAR SYSTEM

Detailed explanation-1: -The formation of planetesimals is an important step in the growth of planetary systems. Planetesimals are the building blocks of the rocky terrestrial planets (Mercury, Venus, Earth, and Mars) as well as the cores of the gas giants (Jupiter and Saturn) and the ice giants (Uranus and Neptune).

Detailed explanation-2: -A planetesimal is an object formed from dust, rock, and other materials. The word has its roots in the concept infinitesimal, which indicates an object too small to see or measure. Planetesimals can be anywhere in size from several meters to hundreds of kilometers.

Detailed explanation-3: -Protoplanets are built up through the collisions of planetesimals over millions of years. The protoplanets orbit stably around the Sun for a while, but eventually they collide with each other. In about 100 million years, several terrestrial planets, like the ones found in our Solar System, are formed.

Detailed explanation-4: -A planetesimal is a rock-type object formed in the early solar system from collisions with other objects in the solar system. The collisions eventually formed larger objects that led to the formation of planets.

Detailed explanation-5: -Many Moons Many of the moons orbiting planets are considered planetesimals. The largest of Neptune’s 13 moons, Triton, falls into this category. One of Saturn’s 53 moons, Phoebe, is a planetesimal, as well as both of Mars’ moons, Phobos and Deimos.

Detailed explanation-6: -Planetesimals are rock-like formations. These are formed through the accretion of ice and dust particles. Even though planetesimals are made of ice and dust, eventually they combine with smaller planetesimals. Therefore, planetesimals are made of dust, ice, and small planetesimals.