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Q.

How the comets are formed??

Tags: money, education, science
Asked by vijayasundarr vijayasundarr, 28 Mar '10 04:59 pm
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Answers (3)

 
1.

Any of a class of small celestial objects orbiting the Sun and developing diffuse gaseous envelopes and often long luminous tails when near the Sun. The comet makes a transient appearance in the sky and is often said to have a hairy tail. The word comes from the Greek komts, meaning hairy one, a description that fits the bright comets noticed by theDespite their name, many comets do not develop tails. Moreover, comets are not surrounded by nebulosity during most of their lifetime. The only permanent feature of a comet is its nucleus, which is a small body that may be seen as a stellar image in large telescopes when
tail and nebulosity do not exist, particularly when the comet is still far away from the Sun. Two characteristics differentiate the cometary nucleus from a very small
asteroidnamely, its orbit and its chemical nature. A comet's orbit ismore eccentric; therefore, its distance to the Sun varies considerably. Its material is more volatile. When

far from the Sun, however, a ...more
Answered by KARTIKAY SHARMA, 28 Mar '10 05:54 pm

 
  
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2.

Comets are nothingh but they are celestial bodies . appears when they come near to sun>
Answered by anoopsingh, 28 Mar '10 05:15 pm

 
  
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3.

Comets are mostly composed of ices (water, methane, ammonia, etc.) and dust, which is the reason why some scientists call them "dirty snowballs". Comets, like the other objects in this question, were created from the same stuff that makes up all the planets. When the solar system was just forming, it consisted of just dust and gas orbiting around the early Sun. Much of this gas and dust stuck together and clumped to form the planets. However, there was some material left over. Some of this leftover debris consisted of small chunks of dust and ice. Today comets reside largely in two places, the Kuiper Belt and the Oort cloud. The Kuiper Belt is much like the Main Asteroid Belt, except that it lies outside the orbit of Pluto. The Oort cloud is a huge (spherical) halo of comets well outside the orbit of Pluto; the Oort cloud may extend nearly 1/5 of the way to the nearest star.

Every now and then, comets get disturbed by gravity fluctuations (from the planets in the solar system or fr ...more
Answered by gkr, 28 Mar '10 05:11 pm

 
  
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