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The comets are ice-rich bodies that become prominent when heat from the
sun causes their trapped volatiles to sublimate. The most visible and
distinctive features of comets are the coma and tail. However, most of
the mass of a comet is contained within a comparatively tiny central
nucleus, and it is this body that is of the highest scientific interest
because of its likely identity as a planetesimal from the outer regions
of the solar nebula.
Click on a picture to follow a link.
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Jewitt | Kuiper Belt |
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