পৃথিবীর বর্তমান বয়স কত ?

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Oct 12, 2012 04:26 AM 1 Answers
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AnswersBD Administrator Oct 12, 2012 08:02 AM
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The age of the Earth is 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%).

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