
What is tidal locking?
Daniel and Kelly’s Extraordinary Universe
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The History of the Moon
Until 1959, no human had ever seen the backside of the moon. It was this like dark spot in our vision that we just couldn't see. The earth has been gradually slowing down the moon's spin little by little every year. We don't really know exactly how old life is on earth, but it stretches back billions of years.
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