Encke's, Halley's, and Hale-Bopp, for Instance

This page is the CodyCross answer for the clue below from Performing Arts, Group 889, Puzzle 4 (Tightrope Walking).

Question is: Encke's, Halley's, and Hale-Bopp, for Instance

and the answer is: COMETS

Word Meaning:

COMETS — plural of comet

Definitions from Wiktionary.