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en.wikipedia.org/wiki/Spherical_Earth

The earliest reliably documented mention of the spherical Earth concept dates from around the ... "My conviction is that the Earth is a round body in the centre of the heavens, and therefore has no need of air or of any similar force to be a support". .... Some ideas were found possible to preserve, although in altered form.

starchild.gsfc.nasa.gov/docs/StarChild/questions/question54.html

It has actually been known that the Earth was round since the time of the ancient Greeks. I believe that it was Pythagoras who first proposed that the Earth was ...

scienceblogs.com/startswithabang/2011/09/21/who-discovered-the-earth-is-ro

Sep 21, 2011 ... He felt sure the earth was round.” –Emma Miler Bolenius, American Schoolbook Author, 1919. One of the most enduring myths that children ...

www.discovery.com/dscovrd/nature/no-earth-isnt-flat-heres-how-ancients-proved-it

Jan 28, 2016 ... Scholars have known for thousands of years that Earth is round. One rapper thinks they've got it all wrong.

www.bbc.com/earth/story/20160126-how-we-know-earth-is-round

Jan 26, 2016 ... The fact that Earth is round has been common knowledge ever since ... He discovered that at noon in one Egyptian city, the Sun was directly ...

www.livescience.com/16468-christopher-columbus-myths-flat-earth-discovered-americas.html

Oct 9, 2011 ... Find out why we celebrate Columbus as the man who discovered the ... Greek mathematicians had already proven that the Earth was round, ...

www.phy6.org/stargaze/Scolumb.htm

Mar 31, 2014 ... Christopher Columbus too knew that the Earth was round, when he proposed ... are not seen further north The full quotation can be found here.

www.slideshare.net/DianaSummers/who-first-knew-the-earth-was-round

Aug 3, 2011 ... The Ancient Armenians understood that the earth was round and that .... He found it to be 6,340 km, roughly the same answer as Eratosthenes'.

futurism.com/facts-obvious

Jan 26, 2016 ... We knew that Earth was round long before we ever went to space. ... were, myself included, and he is still credited by some for this discovery.