彗
5.The nebulous, luminescent cloud containing the nucleus and constituting the major portion of the head of a comet.
6.The Evolution of Non-Linear Waves as Well as the Verification in the Plasma Cometary Tails
7.For all the fiery display it makes in the sky, the nucleus of a comet is relatively small.
8.On-Site Coma Measurement Technique Base on Linewidth Asymmetry of the Aerial Image
9.There are obvious wounded facets with "large spots" on the film of Jupiter after the impact.
10.The Sudbury fullerenes contained helium with compositions similar to some meteorites and cosmic dust.

