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What have we here?

What have we here? 

“We know that the Moon is “tidally locked” to Earth, always showing the same face since its rotation matches our own. But it’s not perfect. Thanks to a something called lunar libration, the Moon sort of oscillates in its elliptical orbit, and we are able to see slightly more than half its face throughout the year.” via Joe Hanson  and Philip Plait .  Original article:

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  1. can you imagine the tidal action 70 or 80 million years ago this satellite created… totally amazing, 30 meter waves was probably a good day.

    I wonder what it must have been like to look up into the night sky and watch it sweep pass to a distant horizon. It must have been a monster in the night sky.


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