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চাঁদ কীভাবে এলো?

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অতি উৎসাহী কেউ কেউ তো মনে করেন, চাঁদের উৎপত্তির পেছনে আছে কোনো অতি বুদ্ধিমান মহাজাগতিক প্রাণীর হাত!

The giant-impact hypothesis, sometimes called the Big Splash, or the Theia Impact suggests that the Moon formed out of the debris left over from a collision between Earth and an astronomical body the size of Mars, approximately 4.5 billion years ago, in the Hadean eon; about 20 to 100 million years after the Solar System coalesced. The colliding body is sometimes called Theia, from the name of the mythical Greek Titan who was the mother of Selene, the goddess of the Moon. Analysis of lunar rocks, published in a 2016 report, suggests that the impact may have been a direct hit, causing a thorough mixing of both parent bodies.

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