PLANET FORMATION: How to Build a Real Planet

Core Accretion Model

Last Updated: Dec 29, 2018

The Core Accretion Model

Core Accretion Model

The core accretion model describes the creation of our planet and solar system. Solar wind swept in hydrogen and helium closer to the sun because these particles were smaller in size.

But the sun couldn’t pull in heavier elements because of their mass. They spiraled and gelled together into planets of their own. Earth coalesced to form spheres of their own. The heaviest material like iron and zinc sank to the core.

Finally, lighter material remained on top to form a crust. The two opposing forces of Jupiter and the sun counteracted each other stabilizing the terrestrial planets and an asteroid belt between.

Solar System Formation

Solar System

The solar system is a planetary system that includes a central star of the sun and all the natural space objects orbiting the Sun.

For example, the mass of the sun accounts for 99.86% of the weight from our solar system. Then, the planets closest to the star is densest. Finally, the less dense planets are on the exterior.

The asteroid belt is kilometers in size positioned between Mars and Jupiter. These odd-shaped rocks never made it into a planet of its own.

Finally, icy bodies and space debris fill the Oort Cloud and Kuiper Belt at the edge of the solar system.

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