GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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450, 000 years
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4.5 million years
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450 million years
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4.5 billion years
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Detailed explanation-1: -The age of the solar system, derived from the study of meteorites (thought to be the oldest accessible material around) is near 5 billion years; that of the Earth is taken as 4.6 billion years. The oldest rocks on Earth are dated as 3.8 billion years.
Detailed explanation-2: -Approximately 4.6 billion years ago, the solar system was a cloud of dust and gas known as a solar nebula. Gravity collapsed the material in on itself as it began to spin, forming the sun in the center of the nebula. With the rise of the sun, the remaining material began to clump together.
Detailed explanation-3: -Once upon a time, about 4.5 billion years ago, the Earth was an unformed doughnut of molten rock called a synestia-and the moon was hidden in the filling. That’s one possible explanation for the moon’s formation, anyway.