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Eratosthene measured the earth diameter somewhere around 200BC<br>
<a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Eratosthenes#Measurement_of_the_Earth's_circumference">https://en.wikipedia.org/wiki/Eratosthenes#Measurement_of_the_Earth's_circumference</a><br>
<br>
A better question to ask is when circular earth became dominant
belief. That, I am not aware of good documentation. That said,
Columbus knew the earth to be round so it wasn't super obscure
knowledge.<br>
<br>
NASA has a short history here:
<a class="moz-txt-link-freetext" href="https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question54.html">https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question54.html</a><br>
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<div class="moz-cite-prefix">On 26/01/2018 11:33 AM, Steffen
Nurpmeso wrote:<br>
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cite="mid:20180126163300.fREFk%25steffen@sdaoden.eu">
<pre wrap="">John Haxby <a class="moz-txt-link-rfc2396E" href="mailto:john.haxby@oracle.com"><john.haxby@oracle.com></a> wrote:
|> On 26 Jan 2018, at 07:35, Paul Eggert <a class="moz-txt-link-rfc2396E" href="mailto:eggert@cs.ucla.edu"><eggert@cs.ucla.edu></a> wrote:
|> On 01/24/2018 10:33 PM, Clive D.W. Feather wrote:
|>> Robert Elz said:
|>>
|>>> Once upon a time, the world was always flat, everyone knew that,
|>>> the pope even proclaimed it...
|>>>
|>> Cite?
|
|A spherical earth pre-dates a Pope by quite a few centuries. One of \
|the better known Greeks (whose name escapes me) even estimated the \
|diameter of the earth. A flat earth is a relatively new fad.
Now i am anything but a christian, yet i would support the
philosophical reasoning.
|> I doubt whether any Roman Catholic pope proclaimed the Earth flat \
|> as a matter of doctrine. That being said, flat-Earthers are still \
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