Why Did Ancient Astronomers Believe the Earth Was Round?

Thread starter quah13579
Start date Aug 2, 2010
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Earth Flat

Aug 2, 2010

quah13579

earth was not flat because ??

ancient astronomers knew that the Earth was not flat because it cast a circular shadow during a lunar eclipse. state another observation that led them to the same conclusion

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Aug 2, 2010

Vanadium 50

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This sounds like homework. Please reread the PF Rules about homework.

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