Comet discoverers are astronomers who identify new comets in the night sky. They use telescopes and other instruments to observe celestial objects and track their movements. Comets are icy bodies that release gas and dust, forming a glowing coma and tail when they approach the Sun. Historically, many comets were discovered by amateur astronomers, while others were found by professionals using advanced technology. Notable comet discoverers include Edmond Halley, who predicted the return of Halley's Comet, and Clyde Tombaugh, who discovered Pluto and contributed to the study of comets.