Here's why:

* Head: Comets have a bright, glowing head called a coma, which is formed from ice and dust that vaporizes as the comet approaches the Sun.

* Tail: As the Sun's heat intensifies, the comet's coma material is blown away by the solar wind, forming a long, sweeping tail that often points away from the Sun.

* Orbit around the Sun: Comets are celestial objects that orbit the Sun in highly elliptical paths.

Let me know if you have more questions about comets!