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Re: OT: Celestial maps

From:Mark J. Reed <markjreed@...>
Date:Tuesday, January 15, 2008, 19:19
On Jan 15, 2008 1:41 PM, caeruleancentaur <caeruleancentaur@...> wrote:
> >Depends on what you mean by "different". The Moon is receding from > >the Earth at a rate of about 38mm/year. So, for instance, back at the > >start of the Pleistocene it was about 40,000 miles closer to us than > >it is now. > > Math is not my strong suit. Can you tell us how much larger the moon > appeared then than it is now? Twice as large? Thrice as large, etc. ?
Nothing that dramatic. :) It's currently almost 240,000 miles away, so 40,000 miles is "only" a 1/6 difference. It would have been about 20% larger in apparent diameter, or 44% larger in area. -- Mark J. Reed <markjreed@...>