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    Tuesday, November 28, 2017

    10 things you need to know about comets

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    In our travels through the solar system, we can be fortunate enough to encounter giant ice balls. They are comets of the solar system. Some astronomers call the comet "dirty snowballs" or "ice balls of mud", because they consist mainly of ice, dust and debris of rocks. Ice can consist of both ice water and frozen gases. Astronomers believe that comets can consist of the original material that formed the basis of formation Although most of the small objects in our solar system represent very recent discoveries, comets have been well known since ancient times. The Chinese have records of comets that date back to 260 BC. This is because comets are the only small bodies in the solar system that can be seen with the naked eye. The comets that pass in orbit around the Sun are a pretty spectacular sight. Here is 10 things you need to know about comets.

    1. If the Sun were as large as the front door, the Earth would be the size of a coin, a dwarf planet Pluto would be the size of a pinhead, and the largest comet of the Kuiper Belt which is about 100 km across, which is about one twentieth Pluto, will the size of a speck of dust.
    2. Short-period comets or the comets that make a complete revolution around the Sun in less than 200 years, live in an ice region known as the Kuiper Belt, located beyond the orbit of Neptune. Long comets means comets with long, unpredictable orbits, originate in distant corners of the Oort Cloud, which is located at a distance of up to 100 thousand AU.
    3. The days on the comet are changing. For example, the day on Halley's comet ranges from 2.2 to 7.4 Earth days. Halley's comet makes a complete revolution around the Sun for 76 terrestrial years.
    4. Comets are cosmic snowballs, consisting of frozen gases, rocks and dust.
    5. The comet warms up as it approaches the Sun and creates an atmosphere or a coma. Kom can have hundreds of thousands of kilometers in diameter.
    6. Comets do not have satellites.
    7. Comets do not have rings.
    8. More than 20 missions were sent to study comets.
    9. Comets can not sustain life, but may have brought water and organic compounds - building blocks of life - through collisions with the Earth and other objects in our solar system.
    10. Halley's comet was first mentioned in Bayeux from 1066, which tells of the overthrow of King Harold William the Conqueror at the Battle of Hastings.
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