Origin of comet
Examples from the Web for comet
They found that there are roughly 1,900 hydrogen atoms for each deuterium atom in the water on Comet 67P.
The probe appears to be sitting at the bottom of a "cliff" on the comet, but beyond that it's hard to tell.
The basic approach went as planned: after separating from the Rosetta orbiter, Philae coasted slowly to the comet surface.
Landing on any other world is hard, but Comet 67P is especially challenging, even apart from the low gravity.
The comet is basically shaped like a rubber ducky, but with a much rougher surface.
And Holmes's comet of 1892 displayed only a faint prismatic band devoid of any characteristic feature.A Popular History of Astronomy During the Nineteenth Century|Agnes M. (Agnes Mary) Clerke
The imposing aspect of the comet in 1066 described in European chronicles of that time is confirmed by the Chinese Annals.Astronomical Curiosities|J. Ellard Gore
Then a twist of the left handle-bar caused the Comet to slow down, and he pulled back on the bit.Motor Matt's Daring, or, True to His Friends|Stanley R. Matthews
According to Biela's prediction, the comet returned every six years and thirty-eight weeks until 1852.A History of the Nineteenth Century, Year by Year|Edwin Emerson
Well ship the Comet to Park Haven to-morrow, and then well go there ourselves to take part in the great race.The Motor Boys in the Clouds|Clarence Young
British Dictionary definitions for comet
Word Origin for comet
Word Origin and History for comet
c.1200, from Old French comete (12c., Modern French comète), from Latin cometa, from Greek (aster) kometes, literally "long-haired (star)," from kome "hair of the head" (cf. koman "let the hair grow long"), of unknown origin. So called from resemblance of a comet's tail to streaming hair.
Science definitions for comet
Culture definitions for comet
An object that enters the inner solar system, typically in a very elongated orbit around the sun. Material is boiled off from the comet by the heat of the sun, so that a characteristic tail is formed. The path of a comet can be in the form of an ellipse or a hyperbola. If it follows a hyperbolic path, it enters the solar system once and then leaves forever. If its path is an ellipse, it stays in orbit around the sun.