Who first taught the true system of the Universe?

Pythagoras, one of the most distinguished philosophers of antiquity.
He is thought to have been a native of Samos, an island in the
Archipelago; he flourished about 500 years before Christ, in the time
of Tarquin, the last King of Rome. Pythagoras was the first among the
Europeans who taught that the Earth and Planets turn round the Sun,
which stands immovable in the centre;--that the diurnal motion of the
Sun and Fixed Stars is not real, but apparent,--arising from the
Earth's motion round its own axis, &c. After the time of Pythagoras,
Astronomy sunk into neglect.

_Philosopher_, one who studies philosophy.

_Philosophy_, all knowledge, whether natural or moral. The
term is derived from the Greek, _philos_, lover, and
_sophia_, wisdom.


By whom was it revived?

By the family of the Ptolemies, kings of Egypt, who founded a school
of astronomy at Alexandria, which produced several eminent
astronomers, particularly one named Hipparchus. The Saracens, on their
conquest of Egypt, became possessed of the knowledge of Astronomy,
which they carried with them out of Africa into Spain; and thus, after
a long exile, it was introduced afresh into Europe.


Did not Astronomy from this time make great progress?