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What is the moon made of?

A set of instruments shut off almost 50 years ago are still producing useful results. It's the seismometers left by the Apollo missions to monitor moonquakes, which, as the name suggests, are ...
The Moon has long been treated as a geologically dead world, a frozen relic that finished erupting billions of years ago. A wave of new data is now challenging that assumption, pointing instead to a ...
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