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spherical Earth
English Wikipedia - The Free Encyclopedia
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Spherical Earth
The concept of a
spherical
Earth
dates back to around the 6th century BC, when it was mentioned in ancient
Greek philosophy
, but remained a matter of philosophical speculation until the 3rd century BC, when Hellenistic astronomy established the
spherical shape of the earth
as a physical given. The paradigm was gradually adopted throughout the
Old World
during
Late Antiquity
and the
Middle Ages
. A practical demonstration of Earth's sphericity was achieved by
Ferdinand Magellan
and
Juan Sebastián Elcano
's expedition's
circumnavigation
(1519-1522).
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