dust tail


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dust tail

n.
A relatively wide, often flaring and curved, illuminated tail composed of dust that is forced away from a comet's nucleus by solar radiation pressure.
References in periodicals archive ?
Some very bright comets may also have an ion tail, oriented at a slight angle to the dust tail and bluish in colour.
An examination of the images however indicates the presence of a bright ion tail, but the absence of a bright dust tail.
A dust tail extends more than 57,000 miles (92,000 kilometers), far beyond Hubble's field of view.
Visually there were no reports of any tail development until late 2011 August when dust tail lengths of 0.
As a comet nears the sun, it typically sports two tails--a brilliant dust tail and a fainter ion tail.