Even with
the relatively small nucleus (compared, say, to Hale - Bopp's 1997's appearance, with its roughly 20 - mile, or 32 - kilometer, nucleus), Ison still had a whopping 80,000 - mile (120,000 - kilometer) coma.
Not exact matches
The
nuclei of these galaxies change brightness every few weeks, so we know that the objects in the center must be
relatively small (about the size of a solar system).
Thus, the entrainment source of ice
nuclei was
relatively large (compared to previous case studies) and the sedimentation sink of ice crystals was
small.