UNIVERSE
ASTEROIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Comet
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Meteor
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Asteroid
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None of the above
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Detailed explanation-1: -This is the central part of the comet and the only part that is solid. It consists of varying proportions of rock, dust, ice and gas that give comets their “dirty snowball” reputation.
Detailed explanation-2: -A comet’s structure includes the rock-ice nucleus, its atmosphere (coma), and the tails that stream out behind the comet as it approaches the Sun. As a comet approaches the Sun its ices begin to sublimate. The gas escaping from the nucleus carries dust with it, creating the coma.
Detailed explanation-3: -A comet’s coma can be extremely large, extending for about 100, 000 kilometers across-5 to 10 times the diameter of Earth. But the real heart of the comet is the small, solid portion on the inside of the coma, known as the nucleus.