Tail of a comet

(Astron.) a luminous train extending from the nucleus or body, often to a great distance, and usually in a direction opposite to the sun.

See also: Tail

References in periodicals archive ?
Muscat: Stargazers in Oman may be treated with a rare meteor showers on May 23 night as Earth passes through the tail of a comet.
Word History: The tail of a comet looks rather like long hair streaming behind the head.
In the movie, which was posted online, the amateur noticed that the ion tail of a comet called 2P/Encke got crunched, and then ripped off.