hope to be

ust on the far side is m▓uch thicker than the near side

nd even the whole sublayer sublayer

e whole moon a

. However, the reason is ▓still a mystery. Only on site

," Sun said."The sublayer

solar system

exploration might reveal the secrets.The moon and Ear

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th shared a sim▓ilar "childhood." But traces of the remote past on Earth have been erased by ge