noun a celestial object consisting of a nucleus of ice and dust and, when near the sun, a 'tail' of gas and dust particles pointing away from the sun
A comet is a celestial object consisting of a nucleus of ice and dust that orbits the sun and develops a coma (a fuzzy atmosphere) and sometimes a tail.
Comets have been studied extensively by space missions like Rosetta and Deep Impact to gather data on their composition and behavior.
Comets play a crucial role in understanding the early solar system and the formation of planets.
Comets are of interest in astrobiology as they may have delivered water and organic molecules to Earth, potentially influencing the origin of life.
Comets are considered remnants from the formation of the solar system and provide insights into its history.
In a science fiction novel, the protagonist encounters a comet hurtling towards Earth.
The astronomer observed the comet through a telescope and recorded its trajectory.
The meteorologist studied the impact of a comet collision on the Earth's atmosphere.
The astrophysicist conducted research on the composition and behavior of comets in outer space.
The science teacher used a comet as an example to explain celestial bodies to students.
The space scientist analyzed data from a spacecraft that intercepted a passing comet.
During the presentation, the planetarium guide pointed out the path of a comet in the night sky.