The Solar System. Spectra of Science Amole 2013. Early Thought and Models. Aristotle (384 BC -322 BC)- explained the phases of the moon and eclipses by using a geocentric model Ptolemy ( 90 A.D -168 A.D .)- suggests planets, sun, and moon orbited Earth in perfect circles.
Spectra of Science
The Formation of the Solar System
The Formation of the Moon