Cometary ion
Cometary ions are a type of ion trails left behind by comets, when other factors such as solar winds interact with their tail.

Aboard , a subspace communication station in astrometrics listed information on cometary ions alongside plasma wave probes, solar wind dispersion, prestellar nebulae, interstellar matter and nucleosynthesis. (, okudagram)

See also 
 Cometary dust cloud

External link
 
Particles