Authors: P.F. Nali
As a result of a school homework some historical and physical issues on comets are presented at an amateur level.
Comments: 14 pages, in Italian. This article derived from a school homework written in the late 70s and posted on the author's webpage in 2005. It is now posted here in order to ensure wider diffusion.
[v1] 2017-04-21 17:50:53
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