What is the comet’s nucleus and tail? What is the difference between an ionic tail and a dust tail?

The nucleus of a comet is not a solid single body, even if of asteroid dimensions, but a collection of individual bodies. These bodies (lumps, stones, grains of sand, dust) are weakly interconnected, but still form a single whole for the time being. However, with each approach to the Sun, the periodic comet becomes weaker and weaker.
Under the influence of the solar wind, dust particles of the comet are thrown in the direction opposite to the Sun, forming a dust tail of the comet. The comet’s dust tail is usually yellowish in color and glows with light reflected from the Sun.
The comet’s plasma tail is usually bluish in color. The plasma tail of a comet is formed from gas that is electrified by the ultraviolet radiation of the Sun – plasma.

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