There is no need to tell what a comet is.Because on such a great platform most of you may know more than me.As I am just a student with little English.But regardless of that, there is something you may also agree with.That, comet is something interesting. Isn't it?Just think about it: a small chunk of ice or dirt revolving around the sun.Same as the facts that I have here.Interesting facts about comets:1. The first comet was observed long ago around 500 B.C. by a Greek philosophers. 2. Many Scientists think that comets were leftovers from the early development of our...