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How does the Earth's center produce heat?
In my understanding, the center of the Earth is hot because of the weight of the its own matter being crushed in on itself because of gravity. We can use water to collect this heat from the Earth and ...
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Will Neil Armstrong's moon boot marks really last for thousands of years?
This question concerns the residual heat (if any) contained within the Earth's moon.
At the time of the Apollo moon landings, it was widely reported that the boot marks left by the astronauts would ...
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