Useful links as we are having a talk on comets at our autumn speaker meeting. At http://phys.org/print356337886.html … Comet PanSTARRS made an appearance in northern skies in June on the NE horizon, at around dawn. In early July it became vaguely visible in the evening in southern latitudes. At perihelion it was 28 million miles away from the Sun, much closer than the Rosetta comet will come next month.
At http://phys.org/print356247479.html … we have some information on Comet Churyumov Gerasimenko and the Rosetta mission and a new set of images showing a variety of surface features. It is spoilt as astronomers have given each region the name of an ancient Egyptian character or word that revisionists might find confusing. Okay if you are not into Egyptian ancient history, but irritating if you are. They provide a completely different significance to Khepry, Aten, Atum, Anaket, Nut, Ma'at, El Maary etc. In future, when you google these words they are just as likely to come up with the comet rather than the Egyptian original.