What is the smallest constellation in the sky?

The constellation Crux “the Cross” (also referred to as “the Southern Cross”) is the smallest constellation in the sky but it has held an important place in the history of the southern hemisphere. The brilliant cross is formed by bright stars making it one of the most familiar sights to southern hemisphere observers.

What are the uses of constellation?

In Ancient times, constellations were used to create and track the calendar so they knew when to plant crops and harvest them. Constellations were also used for navigation and to help sailors travel across oceans.
Astronomers today still use constellations to name stars and meteor showers. A constellation is a group of stars that looks like a particular shape in the sky and has been given a name. These stars are far away from Earth.