New analysis of Apollo Moon samples finally settles debate: « For decades, scientists have argued whether the Moon had a strong or weak magnetic field during its early history (3.5 - 4 billion years ago). Now a new analysis shows that both sides of the debate are effectively correct. »

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How does blockchain work?Blockchain records digital information and distributes it across the network without changing it. The information is distributed among many users and stored in an immutable, permanent ledger that can't be changed or destroyed. That's why blockchain is also called "Distributed Ledger Technology" or DLT.

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Amazon’s Fire TV Stick 4K Plus is on sale for $29.99, which is $5 shy of its best price. | Image: Amazon,更多细节参见91视频

NASA scraps 2027 Artemis III moon landing in favor of 2028 mission

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