Re: OT: Celestial maps
| From: | Mark J. Reed <markjreed@...> |
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| Date: | Tuesday, January 15, 2008, 19:19 |
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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@...>