Aariv Ahaan

At night if there are no clouds you can see bright spots in the sky at night.

The stars appear to move across the sky during the night, from east to west.

This happens becase earth is turning from west to east.

Constellation

The brightest stars in the night sky seems to form patterns these patterns are called constellation.

We see diffrent constellations of stars at diffrent times of the year. This is because the earth travels along it’s orbit round the sun once each year

orbit

An orbit is the fixed, curved path in which an object moves around another object because of gravity.

Eg: the earth moves around the sun in a orbit.