Thursday, October 29, 2009
".. molten-faced moon ..."
Charlie's Diary: How habitable is the Earth?: "But don't get the idea that late Hadean Earth was a fun place to be. For one thing: that great big moon of ours didn't condense from a debris cloud at its current orbital distance. Tidal dragging is widening the lunar orbit by about 3.8 metres per century; it's now orbits roughly twice as far out as it did when it formed. Which in turn means that the young Earth spun on its axis far faster than it does today, and the tides the newborn molten-faced moon raised during the Hadean aeon would have been something to behold (preferably from a very high altitude)."
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