Define constellations.Describe briefly about any two constellations.
A constellation is a group of stars that form a recognizable pattern in the sky.
The two well-known constellations are Ursa Major and Orion.
Ursa Major (also known as the Great Bear) is a constellation in the northern celestial hemisphere. It is a group of seven relatively bright stars commonly known as the "Big Dipper"
Orion is a constellation located on the celestial equator and can be seen throughout the world.