1992. The study of comets is very important because it is important to know what they are, and also it can explain a lot of unanswered questions about the origins of life. Some people who do not fully understand what comets are and what they do can be led to believe in many bad things, which can result in a tragedy. An example of such a tragedy would be the Heavens Gate incident. There were many people who believed that the comet Hale-Bopp was going to cause something very bad to happen, so they all committed suicide. If people can have a better understanding of what comets are, things like this could possibly be prevented. The roles that comets have played in the earth and in life as it is today are really big and important. If it had not been for comets, then life could possibly not have even existed now. Also, many creatures, for example the dinosaurs, have become extinct because of the comets colliding with the earth. If the comets had never made these creatures go extinct, then life would without a doubt be different....