The nuclei of most comets are about 1-2 miles across. The nucleus of Halley's comet, which is considered to be fairly large, was approximately 10 miles across in its largest dimension. Hale-Bopp's ...

A celestial object found in 2021 within the asteroid belt was confirmed as a main-belt comet, distinguished by its icy composition and comet-like behaviors when near the Sun. Researchers emphasize the ...