GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a sphere shaped object that orbits the Sun
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an object with a tail that is only found orbiting the Sun
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rocky spheres that orbit planets
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a small object made of rock, ice, and dust that has a highly elliptical orbit around the sun and gives off gas and dust in a tail as it travels close to the sun
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Detailed explanation-1: -Comets are frozen leftovers from the formation of the solar system composed of dust, rock, and ices. They range from a few miles to tens of miles wide, but as they orbit closer to the Sun, they heat up and spew gases and dust into a glowing head that can be larger than a planet.
Detailed explanation-2: -The central solid structure of a comet is known as the nucleus. Cometary nuclei are composed of an amalgamation of rock, dust, water ice and frozen carbon dioxide, carbon monoxide, methane and ammonia.
Detailed explanation-3: -The gas (water vapor, carbon monoxide, carbon dioxide, and traces of other substances) and dust forms an “atmosphere” around the nucleus called a “coma.” Material from the coma gets swept into the tail. As comets move close to the Sun, they develop tails of dust and ionized gas.
Detailed explanation-4: -Comets are defined as icy bodies of frozen gases, rocks and dust left over from the formation of the solar system about 4.6 billion years ago. They orbit the sun in highly elliptical orbits that can take hundreds of thousands of years to complete.