The sun and the planets in the Solar system are part of a galaxy. The heavenly bodies move, spin on account of the gravity which each body exercises. It is mind-boggling to speculate on the size or number of the stars, planets, and the distances at which they are placed. The science of cosmology has unravelled quite a few phenomena, yet what is known is a fragment of the infinite
- Author:T. Pakshirajan
- Illustrations:Subir Roy
- No of Pages:104
- Colour:Four-colour
- Category:Information
- ISBN:81-7011-892-1
- Available also in:Hindi