UNIVERSE
COMETS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The comets are crashing into the sun.
|
|
|
The comets have been brightened by the sun.
|
|
|
The comets are stuck in the sun’s gravity.
|
|
|
The comets have been burned by the sun’s heat.
|
Detailed explanation-1: -Comets are very large in size but they appear to be small as they are far from our Earth. They are large dirt particles . They can’t emit their own light so when they come near to sun the light falls on comet and they shine. So Comets become visible only when they are near the sun.
Detailed explanation-2: -A comet nucleus is the solid core of a comet consisting of frozen molecules including water, carbon monoxide, carbon dioxide, methane and ammonia as well as other inorganic and organic molecules-dust.
Detailed explanation-3: -As of November 2021 there are 4, 584 known comets. However, this represents a very small fraction of the total potential comet population, as the reservoir of comet-like bodies in the outer Solar System (in the Oort cloud) is about one trillion.
Detailed explanation-4: -Most comets are discovered by the professional surveys. We amateurs tend to find stuff in areas near the sun where the surveys don’t look. How do you do it? The computer and the telescope do most of the work.
Detailed explanation-5: -We now know that comets are leftovers from the dawn of our solar system around 4.6 billion years ago, and consist mostly of ice coated with dark organic material. They have been referred to as “dirty snowballs.” They may yield important clues about the formation of our solar system.