Why Do Comets Have Tails?

Thảo luận trong 'Thư giãn, giải trí' bởi Mẹ Bin_Bi, 27/3/2020.

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    Tham gia:
    23/11/2018
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    Astronomy and the wonders of the cosmos seem to sweep us off our feet every day. Because the more we learn about celestial objects, the more fascinating they become. The best part about this field of science is that we never seem to run out of things to research. There are countless things that we don’t know or fully understand, which keeps us ready and eager for more. For instance, have you ever wondered what those glimmering tails behind comets are? Well, you’re about to find out in this video! What are comets? Like all other things in science, comets have long been associated with signs from God. In early ages, comets could have meant good omens for some kings, but a bad sign for the others! In 1910, people in Chicago sealed their windows in response to a rumor that the tail of the comet could inject poison into Earth’s atmosphere. However, our current knowledge discards such fictional ideas! Comets are celestial bodies that are mainly composed of ice. A common name researchers use is “snowy dirtballs”. They are ‘snowy’ because they’re composed of ice, while ‘dirtball’ indicates the presence of a lot of dust. A majority of these comets are known to orbit the sun, but they’re known to generally inhabit a far-away area of the solar system called the Oort Cloud. The structure of a comet can be divided into two parts: the nucleus and the coma. The nucleus is the dark part of the comet that consists of a rocky core and has dust, ice, and a variety of gases on its surface. The glittering part that shoots out from the nucleus is referred to as the coma. The word derives its origin from Latin Comida, which means “hairy”.
     

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