GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the light-year
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the parsec
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the centimeter
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the astronomical unit
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Detailed explanation-1: -Astronomical units, abbreviated AU, are a useful unit of measure within our solar system. One AU is the distance from the Sun to Earth’s orbit, which is about 93 million miles (150 million kilometers).
Detailed explanation-2: -The astronomical unit is used primarily for measuring distances within the Solar System or around other stars. It is also a fundamental component in the definition of another unit of astronomical length, the parsec.
Detailed explanation-3: -Measuring Space With Parsecs Because space is so big, many astronomers do not like to say how far away things are using miles or kilometers. Instead, we use a measurement that we call a parsec. Remember Alpha Centauri, the closest star? It is 1.347 parsecs, or 41, 560, 000, 000, 000 (or 41.56 trillion) kilometers away.