how does a comet form?

Comets are large rocks that travel through space. Space is very cold, so comets are covered in ice and other frozen materials. When they move towards a sun, however, they are warmed and develope an impressive tail which you can see in a telescope. A comet's tail is made up of gas. Can you explain how this tail is formed? Be sure to name any changes of state which you think have occured.

The tail is formed ___(13)___ the comet approaches the sun

Why are there two tails to some comets?

What is a comet? aa small body of ice, rock, and dust that orbits the sun bany minor body that orbits the sun beyond the orbit of Neptune cthe trail of light seen from Earth as a meteoroid burns up in Earth's atmosphere dan irregularly shaped, pockmarked piece of debris that broke apart from an asteroid

Once thought to be signs form the heavens of future events, comets now are understood to be relatively simple astronomical phenomena. Comets are celestial bodies of small mass ___(11)___ mainly of gases.