Comet Definition & Meaning - Merriam-Webster
The meaning of COMET is a celestial body that appears as a fuzzy head usually surrounding a bright nucleus, that has a usually highly eccentric orbit, that consists primarily of ice and dust, …
Comet - Wikipedia
A comet is an icy, small Solar System body that warms and begins to release gases when passing close to the Sun, a process called outgassing. This produces an extended, …
COMET | English meaning - Cambridge Dictionary
COMET definition: 1. an object that moves around the sun, usually at a great distance from it, that is seen on rare…. Learn more.
What Is a Comet? | NASA Space Place – NASA Science for Kids
2024年11月8日 · Comets are large objects made of dust and ice that orbit the Sun. Best known for their long, streaming tails, these ancient objects are leftovers from the formation of the …
Comets - NASA Science
Comets are cosmic snowballs of frozen gases, rock, and dust that orbit the Sun. When frozen, they are the size of a small town. When a comet's orbit brings it close to the Sun, it heats up …
Comet | Definition, Composition, & Facts | Britannica
2024年10月28日 · comet, a small body orbiting the Sun with a substantial fraction of its composition made up of volatile ices. When a comet comes close to the Sun, the ices …
COMET | definition in the Cambridge English Dictionary
COMET meaning: 1. an object that moves around the sun, usually at a great distance from it, that is seen on rare…. Learn more.
comet, n. meanings, etymology and more - Oxford English …
A celestial object typically following a greatly elongated elliptical orbit around the sun and appearing, when in the inner solar system, as a slow-moving, starlike head surrounded by a …
COMET definition and meaning | Collins English Dictionary
A comet is an object that travels around the sun leaving a bright trail behind it.
COMET Definition & Meaning | Dictionary.com
A celestial object that orbits the Sun along an elongated path. A comet that is not near the Sun consists only of a nucleus—a solid core of frozen water, frozen gases, and dust. When a …