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17 March, 07:30

Which number is closest to the age of our solar system?

A. 450,000 years

B. 4.5 million years

C. 450 million years

D. 4.5 billion years

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Answers (1)
  1. 17 March, 08:10
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    D. 4.5 billion years

    Explanation:

    Scientists study meteorites to determine the age of our solar system, since they are the oldest accessible material out there. Earth itself has rocks that are over 4 billion years old.

    In recent times, meteorites have informed our view of, and our priorities about, what spacecraft - and perhaps, one day, human explorers - might find on Mars and other planets. And we now recognize that a cosmic delivery of life with an independent origin from our own would revolutionize our ideas about the extent of life throughout the whole known Universe.
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