Hale-Bopp originated in the Oort Cloud, a theoretical shell of icy planetesimals surrounding the sun in the outer reaches of ...

Perhaps counterintuitively, the probe found the composition of the water vapor on Comet 67P was significantly different from ...

Following the once-in-a-lifetime Comet C/2023 A3 comet that passed over Connecticut, NASA officials said another comet, Comet ...

From a recent NASA blog: “The comet successfully made its closest transit past the Sun on Sept. 27. Scientists surmised it might well break up during that pass, its volatile and icy composition ...

ESA/NASA Comets have their distinctive tails because of their composition. Unlike asteroids, which are made of rock, comets are made of a mixture of rock and ice. As they get close to the sun ...

ATLAS, celebrated as the “Comet of the Century” by skywatchers, recently dazzled observers with a brilliant and extensive ...

Astronomers report that Comet Tsuchinshan-ATLAS reached its closest point to the Sun on Sept. 27, putting on a spectacular ...

including their size and composition. Toward this end, my colleagues and I work to characterize new long-period comets. The largest known one, Bernardinelli–Bernstein, discovered just three ...

All comets were formed when the solar system was formed, according to Rao. “(The) composition of these comets is basically what existed at the time of the formation of the solar system,” she said.

helping better our understanding of comet orbits, composition and evolution. Citizen scientists can contribute to the project and have helped find more than 5,000 comets since the project was ...