What is accretion, and how does it relate to the formation of the Earth?

1 Answer
Feb 13, 2018

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Accretion is a process in which matter comes together and leads to gradual increase in the size of an object

In space , what pulls the matter together is gravitational force.

So , how it is related to earth's formation is that when the Sun was born it had spawned a large amount of rocks and cosmic floatsam.

All these rocks and floatsam gradually started accumulating or accreting onto each other.

Slowly but steadily , they accumulated onto each other to such an extent that it reached a certain size.

Over the course of time , this lump of accreted material from the birth of solar system evolved into our planet , Earth