Question

Have you ever seen in the evening or in the predawn hours a large celestial body with a long tail? What is it called?

Answer 1

A large celestial body with along tail seen in the evening or predawn hours is called a Comet. it consist of nucleus of ice and dust and when it comes near the sun a tail of gas and dust particles is made.

They are thought to be one of the remnants of planet formation. most famous of these comets is Haley comet which appears after every 75 years 

Answer 2

Question

Have you ever seen in the evening or in the predawn hours a large celestial body with a long tail? What is it called?

Answer :

Yes,

The celestial body having a star like head and a long luminous tail is called a comet.

Comet : The small body with a head and a long luminous tail. It is made up of dust and frozen gases. It appears in the sky after a long period.