Final answer:
Comet hunters ensure the fuzzy patch they spot in the sky is a new comet by consulting an atlas, distinguishing it from known celestial objects, and observing its motion. Notable comet hunters include Charles Messier and David Levy.
Step-by-step explanation:
Who First Spots the Comet in the Sky?
When a potential new comet is spotted in the sky, it often looks like a small, fuzzy patch, similar to nebulae or galaxies as seen through amateur telescopes.
The celestial body must be located using an atlas of the sky to confirm it is indeed a comet and not a known object. Notable individuals in the history of comet hunting include Charles Messier, known as "The Comet Ferret," and modern-day comet hunter David Levy, who co-discovered Comet Shoemaker-Levy 9.
Messier frequently experienced the disappointment of mistaking nebulae for comets, leading him to compile a catalog to prevent such confusion. Levy, after many hours of searching, successfully found several comets, both independently and collaboratively, contributing significantly to the field of astronomy.