plural of vomit comet

plural of nonperiodic comet

plural of parabolic comet

plural of short-period comet

plural of short period comet

plural of near-Earth comet

plural of non-periodic comet

Synonym of Halley's Comet

A great comet which can be seen from Earth every 75–76 years.

(slang) A reduced-gravity aircraft, an airplane that briefly provides a nearly weightless environment by flying on a parabolic flight path; used to train astronauts or conduct research.