Our solar system was formed about ............. years ago.

15 million

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15 billion

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4.5 to 5 billion

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10 to 15 billion

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Solution

The correct option is C 4.5 to 5 billion
The solar system was formed around 4.6 billion years ago out of the collapse of a dense cloud composed of dusts and gases. By studying several things, mostly meteorites and using radioactive dating techniques, specifically looking at daughter isotopes, scientists have estimated that the solar system is 4.6 billion years old.

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