Galaxies contain tens or hundreds of billions of stars like the Sun and all this mass attracts nearby galaxies. They

Our galaxy, the Milky Way, is isolated in space but it is not alone. The galaxy closest to us is

When a star becomes a white or red dwarf, its size is no greater than that of the Earth and

The Sun as well as all the stars that you see in the sky are born in a huge cloud

When you observe the sky for several months, you will see that the planets evolve slowly through the stars. Former

A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial