History of the Universe

History of the Universe eBook. 398 pages, 300 illustrations only $2.99

Loading Google Custom Search...
Font Smaller Font Bigger

Solar Disc

As the Sun formed, gravity pulled the gas and dust around it into a spinning disc.

Here the dust grains hit each other and their sticky layers of ice stuck them together into bigger snowballs (scientific name planetesimals).

This made the disc break up into rings. Here the snowballs stuck together to make larger and larger lumps. The dust grains at the center of each snowball collected into rocky lumps.

Finally gravity collected these rocky lumps together until they formed planets

Get this website as an eBook only $2.99


Start Earlier Later Index Contents Timeline News Store Privacy & Cookies Ask A Question Non Mobile Site Font Smaller Font Bigger
History of the Universe eBook
History of the Universe eBook
Only $2.99

Written by Wyken Seagrave
Copyright © 2017 Penny Press Ltd